Dalton’s theory was identified using

light microscope images of atoms.
the experimental results of other scientists.
water vapor and air experiments.

Answers

Answer 1

Answer:

Explanation:

Actually it was the experimental results of other scientists. The main stems of the theory was the indivisibility of small spheres (his image) that represented the elements he knew which reacted with other elements.

They seemed to give the same ratios in reactions (definite proportions) and multiple whole number ratios. Look up Lavoisier.


Related Questions

Which of the following phrases best describes a solvent?

A) can be dissolved by the solute

B) has a high concentration of solutes

C) usually a sugar or protein

D) present in a greater concentration that solutes

Answers

The answer is A
Your dissolving things and solvent dissolves things pretty quickly.

A solvent is a substance present in a greater concentration than solutes (Option D).

A solvent is a substance (usually a liquid) that dissolves another substance/s in order to form a solution.

The solvent has the ability to dissolve other substances present in the solution that are referred to as solutes.

Some of the most common solvents include water, ethanol and methanol.

In conclusion, a solvent is a substance present in a greater concentration than solutes (Option D is correct).

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1. Your friend needs quick energy! What kind of biomoleciste should he eat a lot of? 2. Why? Be specific, what do your cells do with this biomolecule that would help him run? 3. Name two kinds of foods have high amounts of this biomolecule.

Answers

1. Monosaccharide.
2. The most nutritionally important and abundant monosaccharide is glucose, which is used as the major cell fuel in the human body and can be found unbound in body tissues and fluids. Glucose is the building block of several polysaccharides. Galactose and fructose are also used as cell fuel.
3. Honey, and dried fruits such as apples.

Based on this image of a
container with a
selectively permeable
membrane, which way
will the water move if the
solute concentration is
higher on the left than
the right?
A. Water will move from right to left
to get the concentration of solutes
at equilibrium.
B. Water will move from left to right
to get the concentration of solutes
at equilibrium
C. The water will not move because
equilibrium is not necessary.

Answers

Answer:

(A):Water will move from right to left to get the concentration of solute at equillibrium.

You are building a birdhouse when you cut your finger. Predict which body systems would be immediately involved with your
reaction to the cut.

Answers

Answer:

A.

Explanation:

These systems will be involved!

Hope this helps, have a great day.

The nervous system, circulatory system, and integumentary system are body systems involved immediately when you cut a finger.

The integumentary system is the system that groups the natural covering of an organism, for example:

SkinBarkShell

The nervous system is in charge of electrical signals. These signals are those produced by the senses such as taste, smell, sight. Also, they are responsible for sending signals of pain, satisfaction, pleasure, and others to the brain.

The circulatory system is the system in which blood is transported throughout the body for oxygenating and energizing the entire body.

When someone cuts themselves they feel pain (nervous system), blood comes out (circulatory system) and their skin opens and some of its lower layers (integumentary system) can be seen. Therefore, the correct answer is A.

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What about cellulose makes it ideal for structural support?

Answers

Explanation:

Cellulose is ideal as a structural material which give its fibers give strength and toughness to a plant's leaves, roots, and stems.

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Just a easy question .....
I want to see who can answer the faster and brainiest

Differences between duck and peacock

(Please don't spam ) Answer quickly please ​

Answers

Answer:

Duck is smaller whereas peacocks are big

Duck has black\brown features whereas peacocks have colorful feathers.

Pump jacks use upward force and pressure to slowly move oil up a drill shaft. Which statement best describes an environmental consequence of this process?

O Soil is removed by the force and pressure of the drilling process.

High salinity of wastewater reduces soil fertility and growth of vegetation.

Wastewater is contaminated with oil and becomes sludge in landfills.

O Heavy metals are released into surrounding soil, poisoning local vegetation.

Answers

The main consequence of this process is that the soil is removed by the force and pressure of the drilling.

For the extraction of oil from the land, the vegetation is removed that destroys the habitat of many organisms as well as the degradation of soil occurs due to the force and pressure of the drilling machines.

In water, the aquatic organisms including plants and animals are adversely affected due to this process of extraction so we can learn that there are many consequences of extracting oil from the soil to the surrounding environment..

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Answer:

Wastewater is contaminated with oil and becomes sludge in landfills.

Explanation:

About how many times thicker is a
cell wall compared to a cell
membrane?
A. about twice as thick
B. about five times as thick
C. about half as thick
D. up to 100 times thicker

Answers

Explanation:

I think it's up to 100 times

A barrier enclosing the cell, the cell wall is located outside the plasma membrane. The plasma membrane can be up to 100 times thinner than a cell wall, hence option D is correct.

What is a cell wall?

Cellulose, a polysaccharide sugar that gives the cell wall strength, makes up the majority of its composition.

The leaf blades of L. perenne and T. repens and the stems of Z had the thinnest cell walls (0–9 m) and the thickest (2–0–3 m) among the cells classified as thick-walled.

Compared to gram-negative cells, gram-positive cells have substantially thicker cell walls. The typical thickness of the gram-positive cell wall is 20–80 nm, whereas the typical thickness of the gram-negative cell wall is 5–10 nm.

Therefore, the cell wall is up to 100 times thicker compared to a cell

membrane, hence option D is correct.

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What does a cell need to be a prokaryote cell?

please help me i’m stuck !!

Answers

Answer:

The Prokaryotic Cell

Prokaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. Therefore, they do not have a nucleus, but, instead, generally have a single chromosome: a piece of circular, double-stranded DNA located in an area of the cell called the nucleoid.


What type of relationship do humans and honeyguides have?

Answers

Answer:

Humans and honeyguides have a mutualistic relationship, because they both benefit each other. Humans find honey much faster using the birds as guides, and the birds avoid being stung by bees.

if my answer helps you than mark me as brainliest.

Answer:

Humans and honeyguides have a mutualistic relationship because they both benefit each other. Humans find honey much faster using the birds as guides, and the birds avoid being stung by bees.

Explanation:

PLATO answer

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Which step in cellular respiration produces the most ATP?(1 point)


Krebs cycle


glycolysis

electron transport chain

lactic acid fermentation

Answers

Answer:

it's Kerbs cycle which produces most ATP in cellular respiration

Answer:

The answer is electron transport chain

Explanation:

The stage that produces most of the ATP during cellular respiration is the electron transport system (ETS) present in mitochondria.

The formation of ATP occurs by oxidative phosphorylation. Theoretically, 34 ATPs are produced in the ETS by the complete oxidation of a glucose molecule. Electrons are transferred from NADH or FADH2 to O2 by a series of carriers and are coupled to ATP synthase for the formation of ATP.

Need the answers due in a hour

Answers

Answer:

Those gas which are found naturally is call e naturak gases

2)Question is not clear

3)They are 1 They harm your body

2 They cal kill us

4)yes windmill probuce elecriciry

5) yes because it is found easily

Biology 1.....................................................................

Answers

Answer:

Explanation:

1.C

2.B

3.A

4. Endothermic, this processes require an input of energy to proceed and are signified by a positive change in enthalpy, also because the product is less compared to the reactants.

Hi!! can u help me? It's a very confusing question ​

Answers

Answer:

Well since they have the same environment and the only thing that is different is the amount of sunlight and final height of the plant, we can say that the more sunlight a plant gets, the more it grows.

what effect does vitamins have to your body

Answers

Answer:

here is your answer ✔️✔️✔️✔️✔️✔️

1. As a group, you and three other students must make a presentation on an animal. Which option is the best example of your group coming to a consensus on the presentation topic?(1 point)
A. A group member is selected as the team leader and the team leader chooses the presentation topic.

B. Each member gets a vote and the animal with the most votes will be the presentation topic.

C. The group writes options on slips of paper, puts them in a hat, and the paper that is selected will be the presentation topic.

D. The group cannot agree on what animal to choose so your teacher chooses your presentation topic.

2. Why might a paleontologist who works with fossils and an archaeologist who specializes if recovering human artifacts work together to determine where a fossil belongs in the hominid family tree?(1 point)

A. They both know how to remove objects carefully from the ground.

B. They both have different skills to help answer the question about ancient humans.

C. They both understand the relationship between fossils and early humans.

D. They both are experts on different types of bones.

3. Suppose a team of scientists has uncovered the site of an ancient city along a river. Which question could an anthropologist and archaeologist work together to help answer?(1 point)

A. Which plants did humans grow at this site and how were they grown?

B. How have humans impacted the rock layer of the city changed over time?

C. What tools were found at the site and which civilization used them?

D. How did changes in the depth of the river affect the houses people built at the site?

4. Insects are important to many ecosystems. For example, bees help pollinate many different plants and many animals rely on insects as food sources. Citizen science projects allow the public to work together with scientists by collecting observational data on many types of organisms such as plants, birds, or insects.

Which question could citizen science data answer that best illustrates insect population responses to climate change?
(1 point)

A. “What tree species provide the best habitat beetle species in this area?”

B. “What types of foods can butterflies eat?”

C. “How many dragonfly species are native to this region?”

D. “How does caterpillar abundance and distribution change over the year?”

5. Coral bleaching occurs when coral become stressed and expel the algae that they contain. According to scientists, what steps can society take to fix coral bleaching?(1 point)

A. Scientists have concluded that society can only fix coral bleaching by stopping climate change entirely.

B. Scientists have concluded that society can fix coral bleaching by reducing stressors, such as sedimentation and pollution, and limiting climate change.

C. Scientists have concluded that society can fix coral bleaching by reducing stressors, such as sedimentation and pollution.

D. Scientists have concluded that society can only fix coral bleaching by controlling ocean temperatures by reducing greenhouse gas emissions.

Answers

Answer:

1). b

2) d

3). d

4). d

5) b

I hope it's helps you

biomolecules broken down into MONOMERS
(list 4)

Answers

Carbohydrates, lipids, proteins, and nucleic acids.

Examine the model for natural selection for rodents and their predator species, the owls. Which statement accurately
describes the relationship between genetic variation and natural selection? Select ALL that apply.
A)
B)
Genetic variation decreases in a population of prey after natural selection
acts on it
Genetic variation increases in a population of prey after natural selection
acts on it
Genetic variation decreases in a population of predators after natural
selection acts on it
Genetic variation increases in a population of predators after natural
selection acts on it
Genetic variation exists in a population leading to individuals with
adaptations with different survival frequencies.
D)
E)
Indiana is home to fossilized

Answers

The correct answers are:

-Genetic variation decreases in a population of prey after natural selection acts on it.

-Genetic variation exists in a population leading to individuals with adaptations with different survival frequencies.

Genetic variation creates new variants of a gene; such a variant is called an allele. These variations occur as a result of the interaction between individuals with their environment, where it affects them in a way that determines their survival or not, as a consequence of their adaptability to the surrounding context. Thus, natural selection occurs, which establishes which individuals survive and which individuals do not. Thus, individuals characterized as prey who develop defense elements against hunters will be the ones who survive, while those who do not will be the ones who will perish.

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Which descriptions apply to these two compounds?

Answers

Answer:

atoms and molecules

Explanation:

Proteins can be denatured in many ways.
Which of the following will NOT denature
a protein?
A. pH
B. temperature
C. too many enzymes
D. salt content

Answers

Answer:

Explanation:

However, at very high salt concentration, the increased surface tension of water generates a competition between protein and salt ions for hydration. Salts strip off the essential layer of water molecules from the protein surface eventually denaturing the protein

Too many enzymes cannot denature protein.

Enzymes are a type of protein so  they will not get denatured in presence of one another.Enzymes are proteins that speed up any biochemical reaction in the body.

What is denaturation of protein?It is a process of modifying the molecular structure of a protein.It involve breakage of many of the weak bonds within the protein molecule that are responsible for the structure of protein and its order.It can happen due to high temperature, pH, salt concentration and mechanical concentration.

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Overview of photosynthesis, using the detailed inner structure of a leaf.

Answers

Answer:

Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, glucose molecules (or other sugars) are constructed from water and carbon dioxide, and oxygen is released as a byproduct.

Explanation:

¿Qué ocurre cuando inspiramos?

Answers

Answer:

Cuando respiramos, el diafragma se mueve hacia abajo, en dirección al abdomen, y los músculos de las costillas empujan a las costillas hacia arriba y hacia afuera. Esto hace que la cavidad torácica se agrande y tome aire a través de la nariz y la boca para enviarlo a los pulmones.

7. Observations and inferences are
important in science. How would you
explain the difference between the
two words?


Answers

Hey there! I'm happy to help!

Observations are things that can be written down or described. You can observe something with any of your five senses: you can see what color something turns, you can hear the noise something makes, you can taste a cookie with a different amount of an ingredient, you can smell an odor produced by a chemical reaction, and you can feel the texture of different samples.

You can also create observations by using scientific tools. For example, instead of feeling if water is hot or cold, you could use a thermometer. This will give you numerical data which can be put into a table or graphed for further analyzing.

Inferences are created from observation. You cannot make an inference without observation. Observations lead to inferences. Inferences are conclusions or guesses made from the observations. You could infer that sugar makes a cookie taste sweeter after experimenting with no sugar and observing that it tasted bitter. You could infer that more weight allows things to travel further after going down a ramp after measuring the distances different weights travel, graphing it, and observing the data.

Have a wonderful day and keep on learning! :D

What is a silent mutation?

Answers

Answer:

Mutations in DNA that do not have an observable effect on the organism's phenotype.

Method:

Search Engine

Which term defines a well tested,scientifically supported statement that describes how something happens

Answers

Answer:

The term would be: Theory

Explanation:

A theory is a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained. It is a well-substantiated explanation of an aspect of the natural world that can incorporate laws, hypotheses and facts.

Answer:

theory

Explanation:

Describe the effect of increased carbon dioxide concentration on blood pH​

Answers

Answer:

As it combines with water, it forms carbonic acid, making the blood acidic. So CO2 in the bloodstream lowers the blood pH. When CO2 levels become excessive, a condition known as acidosis occurs. This is defined as the pH of the blood becoming less than 7.35

The increase in the carbon dioxide concentration on blood pH leads to the condition known as Acidosis.

What is the normal blood pH?

The level of normal blood pH in humans significantly ranges from 7.35 to 7.45 on a pH scale. It is considered neutral but experimentally it is slightly basic in nature.

As the concentration of carbon dioxide in the blood increases, the carbon dioxide in the presence of water forms carbonic acid which lowers the blood pH from 7.35.

This reduction in blood pH is known as acidosis. This is caused by the overproduction of acid within the body due to excessive concentration of carbon dioxide in the blood's pH. Acidosis leads to feeling fatigued, lethargic, muscle aches, etc.

Therefore, the concentration of carbon dioxide on blood pH negatively harms the health of an individual.

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Suppose a rural community lives at the top of a mountain. They hold a community meeting to discuss the following options to use as their main energy source; Hydro-power, wind energy, or biofuel. List their options from the ideal to the least ideal. Explain your answer.

Please answer ASAP... Ill give brainliest​

Answers

wind energy is also expensive to start as theyll need something like a wind turbine to change it to electricity and considering their location winds are strong at mountain tops so this would be very ideal for them once properly established. bio fuel is the cheapest and easiest to start but it has the biggest effect on the environment as theyll be using wood from trees etc which could destroy their land and lead to soil erosion, drought, desertification and land slides.
hydro power is expensive to start but once established it provides a very reliable source of electricity. they live at a mountain top so i doubt there are any rivers to use hep.

1. What happens when matter changes state?
a. Its chemical properties change.
b. Its physical properties change.
c. The energy of its particles remains the same. hape
d. two of the above

Answers

Answer:

Matter either loses or absorbs energy when it changes from one state to another. For example, when matter changes from a liquid to a solid, it loses energy. The opposite happens when matter changes from a solid to a liquid. For a solid to change to a liquid, matter must absorb energy from its surroundings.

Answer:

d.

Explanation:

Its chemical and physical properties changes as a result of a change in temperature (increase or decrease in temperature).

what is the definition of Concentration Gradient?​

Answers

Concentration gradient= the difference in the concentration of a substance between two areas.

Which of the following are measurable? (Select all that apply)
✓ How often a plant is watered
✓ How much sunlight a plant receives
Seeing the pretty leaves on a plant
The actual number of new leaves on a plant

Answers

Answer:

a

Explanation:

well of you use a cup to give a plant water you can measure how much it drinks

The measurable factors are A) How often a plant is watered, B) How much sunlight a plant receives, D) The actual number of new leaves on a plant.

Options (A) (B) & (D) are correct.

Measurable factors are those that can be quantified or expressed numerically. A) The frequency of watering can be counted and tracked over time. B) Sunlight can be measured in terms of intensity, duration, or light levels. C) "Seeing pretty leaves" is subjective and not quantifiable.

D) The actual number of new leaves is a concrete count, making it measurable. When studying or managing plants, it's essential to focus on quantifiable aspects, like watering frequency, sunlight exposure, and counts of observable changes, for accurate analysis and decision-making.

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The complete question is:

Which of the following are measurable? (Select all that apply)

A) How often a plant is watered

B) How much sunlight a plant receives

C) Seeing the pretty leaves on a plant

D) The actual number of new leaves on a plant

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