this question is for brilliant student .

how to increase oxygen or how oxygen increased in earth because in many years ago at past earth has only have 2% of oxygen but know it has 22% of oxygen​

Answers

Answer 1

Answer:

  plants did it

Explanation:

The development of organisms capable of photosynthesis caused Earth's atmospheric oxygen to increase. These organisms use carbon dioxide and water to form sugar and oxygen.


Related Questions

Which line segment has the same measure as ST?

RX
TX
SR
XS

Answers

Answer:

SR

Explanation:

Line Segments RX and TC have the same measurement, and has a right angle at point X, this proves that SR is equal to the measurement of ST.

A longshore current generally runs __________.
a. parallel to the coastline
b. perpendicular to the coastline
c. against the prevailing wind direction.
d. parallel to the prevailing wind direction.

Answers

Answer:

a parallel to the coastline

Explanation:

it is caused by larger swells sweeping into the shoreline at an angle and pushing water down the length of the beach in one direction

3. When harmful gases, such as sulfur dioxide and nitrogen oxide, react with water in the
atmosphere, they can produce
4. The agent of erosion involved in stream erosion is

Answers

Answer:

3. when harmful gases,such as sulfur dioxide and nitrogen oxide,react with water In the atmosphere,they can produce acidic rain.

4. the agent of erosion involved in stream erosion is water.

I hope this helps

Which of the following best describes the relationship between water
regulation and globalization?
A. The countries that regulate water are causing conflict with those that do not
B. Water should be regulated for tax income.
C. With a growing population, the world needs clean water.
D. Water is a renewable resource, freely available to all countries.

Answers

Answer:

With a growing population,the world needs clean water

Calculate the wavelength of the electromagnetic radiation with frequency 3x1014 Hz.

What is the type of radiation (Gamma rays, Visible, IR etc.)?

Answers

Answer:

Radio waves, Microwaves, Infrared, Visible light, Ultraviolet, X-rays, and Gamma rays. All of these waves wll have the same wavelenghth wich will range between 3×10^19 to 3×10^16 Hz

The particular animals of a given geographic region are called its __________.
A.
flora
B.
fauna
C.
packs
D.
herds

Please select the best answer from the choices provided.

A
B
C
D

Answers

Answer:

it must be fauna coz flora is for plants

Answer:

b) fauna

Explanation:

just took the test

Human beings are born into an environment that is ___ to us in many ways

Answers

Human beings are born into an environment that is [different] ? to us in many ways

The length of a part on model helicopter is 8.5cm;the scale of model is 1:100,000.calculate the real length of the helicopter part in meter

Answers

9514 1404 393

Answer:

  8500 m

Explanation:

At a scale of 1 : 100,000, the real part will be 100,000 × 8.5 cm = 8500 m.

_____

Additional comment

I've not seen or heard of any helicopter that has any parts that are as long as 8.5 kilometers (5.28 miles).

Question 7
Which of the following is true of skeletal muscle tissue?
A
Each cell has a single nucleus.
B
A muscle cell is composed of hundreds of muscle fibers.
Askeletal muscle fiber typically contains a sarcolemma, t-tubules, and myofibrils.
D
Skeletal muscle cells have the same shape as smooth muscle cells.

Answers

Answer:

A skeletal muscle fiber typically contains a sarcolemma,  t-tubules, and myofibrils.

Explanation:

I hope this helps

The correct answer to the given question is C. Because of the following reasons

Skeletal muscle tissue is multi nucleated, cylindrical fiber which are soft and fragile.

Skeletal muscle fiber is surrounded by a plasma membrane called sarcolemma.

They provide pathways for passage of blood vessels and nerves.

These tissues are found in muscles which is directly attached to the skeleton.

The correct answer is C.

Learn more at https://brainly.com/question/20760438

2. Given 4(-x + 4) = 12 Prove x = 1​

Answers

Solve the equation

[tex]\\ \sf \longmapsto 4(-x+4)=12[/tex]

[tex]\\ \sf \longmapsto -4x+16=12[/tex]

[tex]\\ \sf \longmapsto -4x=12-16[/tex]

[tex]\\ \sf \longmapsto -4x=-4[/tex]

[tex]\\ \sf \longmapsto x=\dfrac{-4}{-4}[/tex]

[tex]\\ \sf \longmapsto x=1[/tex]

[tex]\large\bf{\orange{ \implies}} \: \tt \: \: 4 \: ( - x \: + \: 4) \: = \: 12[/tex]

[tex]\large\bf{\orange{ \implies}} \: \tt \: \: - 4x \: + \: 16 \: = \: 12[/tex]

[tex]\large\bf{\orange{ \implies}} \: \tt \: \: - 4x \: = \: 12 \: - 16[/tex]

[tex]\large\bf{\orange{ \implies}} \: \tt \: \: - 4x \: = \: - 4[/tex]

[tex]\large\bf{\orange{ \implies}} \: \tt \: \:x \: = \: \frac{ \cancel{- 4} \: \: ^{1} }{ \cancel{- 4}} [/tex]

[tex]\large\bf{\orange{ \implies}} \: \bf \: \:x \: = \: 1[/tex]

[tex]\Large\underbrace{\textrm{{{\color{blue}{Hence , Proved}}}}}[/tex]

4. If you were to travel from the west coast of Norway to the east custot
Sweden, at about 60 latitude, which climate regions would you
eperience?

Answers

I would experience Hot climate

The Supreme Court supported which of the
following in arguments over the Indian
Removal Act?
A. Cherokee
B. National Government
C. State of Georgia

Answers

Answer:

A. Cherokee

Explanation:

the Court heard two cases dealing with conflicts between the state of Georgia and the Cherokee Nation. Although the Court ruled in favor of the Cherokee, Georgia ignored the decision and in 1838 the Cherokee were forcibly relocated to present-day Oklahoma.

mối quan hệ giữa quá trình nội lực và ngoại lực

Answers

Answer:

The importance of categorizing a force as being either internal or external is related to the ability of that type of force to change an object's total mechanical energy when it does work upon an object. When net work is done upon an object by an external force, the total mechanical energy (KE + PE) of that object is changed.

Explanation:

in vietamnise/

Tầm quan trọng của việc phân loại một lực là bên trong hoặc bên ngoài có liên quan đến khả năng của loại lực đó để thay đổi tổng năng lượng cơ học của một vật thể khi nó hoạt động trên một vật thể. Khi công việc ròng được thực hiện trên một đối tượng bởi một ngoại lực, tổng năng lượng cơ học (KE + PE) của đối tượng đó được thay đổi.

Which statement is true for all democracies?

A)They all have rulers who inherit power.

B)The leader holds all political power.

C)The people elect the leaders.

D) They are all ruled by a dictator.

Answers

Answer:

C

Explanation:

Democracies give the people the choice of who will lead and the leader will have to check in with the people when making decisions

Answer: C

Explanation: Democracy is a system of government by the whole population or all the eligible members of a state, typically through elected representatives.

Considering what you have learned about the coriolis effect, briefly describe the coriolis effect on the atmosphere of the planet venus, which is about the same size as earth but has a period of rotation of 244 earth days

Answers

Answer:

In simple words, The Coriolis Force on Venus is exceedingly mild due to all the planet's sluggish rotation. The Coriolis Influence on the movement of the Earth 's atmospheric is extremely significant, generating continent-sized swirling of cloud formations that are readily visible from space when the Earth rotates on its axis roughly once every 24 hours.

Discuss the advantages of relative location for commercial activities

Answers

Answer:

Relative location shows how things are related by technology, distance or culture.

Explanation:

The advantages of relative location for commercial activities are: forming a sense of community by getting to know your customers better, having repeat customers who are more likely to be loyal because they live in close proximity, the ability to advertise locally which can attract new customers, you can reward local customers which can increase loyalty, and can contribute to the local community by benefiting customers and local nonprofits.  

Answer:Relative location for commercial activities not only cost effective but also targets a larger audience. When you refer to a place using relative location, more number of people are able to relate to it. New customers are attracted when relative location is used for commercial activities

Explanation:

What is the current state of Communist China in the 21st century?

Answers

Answer:

China’s Communist Party turns a century old this July, a milestone that Beijing is celebrating with a crescendo of fireworks, theatrics and a fervent campaign to honor its revolutionary past.

The party has often lurched between tragedy and triumph between its birth as an underground movement and its current dominance over the world’s most populous nation. It seized power in 1949, and its early decades in government were tumultuous, with Mao Zedong launching radical purges and a disastrous industrial program that led to one of the deadliest famines in history.

Mao’s death in 1976 precipitated political and economic changes under Deng Xiaoping that would transform an impoverished nation into a global economic powerhouse.

What rock type is best described as a felsic volcanic rock that is lightweight, light-colored and appears to consist of hard, solid white-gray material with some embedded angular, broken larger grains of crystalline minerals like quartz or feldspar

Answers

Answer:

Rock Key i think

Explanation:

The felsic volcanic rocks are igneous rocks and are rich in feldspar and quartz. They are rich in iron and magnesium, Have silicate mineral-like magma and rocks.

The Felsic combines feldspar and silica. Most of the volcanic rocks are extensively formed such as Rhyolite and is glassy and light grey rock. Rhyolite magmas form highly viscous lava. Rhyolite can be commonly found along the convergent plate boundary. Predominantly Quartz, sanidine.

Learn more about the rock type is best described as a felsic volcanic rock that is lightweight.

brainly.in/question/28515903.

Please I need examples on using 111km in calculating the actual distance on ground when the map distance and scale is given

Answers

Answer: Do it yourself

Find your scale. Maps have different scales e.g. for an explorers map 1:25,000.

Measure distance on map say in centimetres.

Use a ruler, string, or almost anything, pencil, fingers, a twig or I like a spare piece of paper.

Place against the scale for a direct reading.

Or calculate distance.

Say you measure 4 cm on the map. Then remember in this case 1:25,000.

so 4x1 or 4 = 4x25,000 = 100,000 cm real or actual distance.

In meters divide by 100 = 100,000/100 = 1,000 metres. (= 4cm on map).

or in kilometres divide again by 1,000 = 1,000/1,000 = 1 Kilometre. (= 4cm on map).

Also a tip just proved: 1:25,000 is the same as 4 cm = 1 Km or 1 cm = 1/4 Km real.

And best for walking a 1:50,000 scale map 2 cm = 1 Km or 1 cm = 1/2 Km real.

short note on Indian desert​

Answers

Also known as Great Indian Desert, this arid region covers about 92,200 square miles and is the seventh largest desert in the world. ... Although it borders the Indus to the west, Thar is a dry subtropical zone because the monsoons that carry the rain to the rest of India bypass this region.

Give causes of contamination of fresh water.​

Answers

Answer:

Fresh water is the very good for health.

So,Everyone should drink the fresh water.

A017) Strike-Slip Faults - Kazakhstan. The Problem 17 placemark points to an elliptical-shaped plutonic intrusion in Kazakhstan near Lake Balkhash that has been offset by a fault. Given the offset boundaries of the pale-colored igneous rock in the view, what is the sense of offset along this fault

Answers

Answer:

RIGHT LATERAL

Explanation:

From the excerpt: A017) Strike-Slip Faults - Kazakhstan.

Sense of offset along the fault is RIGHT LATERAL and this is because the fault present there is known as Dzhungarian Fault which is either right lateral or dextral strike-slip fault. with an extension of 300 km from the Dzhungarian basin.

two reasons why eastern cape has the lowest percentage of households living in formal dwellings​

Answers

Answer:

Because there's less agricultural activities coursed by less fertile soild, dry climate

d) choose any technical prosession List out technology and technicans involved in that Prosession. Also, write down points related to the importance of that profession:​

Answers

Answer:

hadgjigvnkgdxv

Explanation:

esdjkjvvjklo

Name two forms of energy usually used at homes

Answers

Explanation:

Energy exists in many different forms Which each form can be converted or changed into the other forms. Although there are many specific types of energy, the two major forms are Kinetic Energy and Potential Energy.

1. Electrical Energy

→ Example : Lighting

2. Thermal Energy

→ Example : When you cooking

Hope it helps!

A family that includes a mixture of parents and children unrelated by blood is
also described as a(n):

A. Biological family.
B. Multigenerational family
C. Blended family
D. Extended family

Answers

Answer:

Blended Family: A mixture of parents and children unrelated by blood

Explanation:

Here's the other fours' def:

Blended Family: A mixture of parents and children unrelated by blood Extended Family: Multiple generations and members related by both blood and marriage

Fictive Family: A group of people who are not related but use family titles to refer to each other

Nuclear Family: Married parents and their biological children

hope this helps and please give a brainliest if u can.

A family that includes a mixture of parents and children unrelated by blood is blended family

What Are the Distinct characteristics and activities in western region Ghana

Answers

Cape Three Points, Fort Metal Cross, Fort Santo Antonio, and Fort Batenstein are all places to visit and do activities

If God exists and he (or she) revealed themselves, would people who believe in God actually accept God as God? :-'|​

Answers

Answer:

as I do believe in God it really depends on the person and there connection with God and If they do believe in God but I belive that God has no gender that God is God and someone else may believe different and that's okay and I respect that

name one natural phenomenon in which a spectrum can be seen? ​

Answers

Answer:

A rainbow is an optical and meteorogical phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured arc.

Commenting to unlock messages

where is garo hills ?????????​

Answers

Answer:

Garo Hills, Meghalaya 794001

Other Questions
factorise the given number 12 Below are the data collected from two random samples of 500 American adults on the number of hours they spend doing leisure and sports activities perday (rounded to the nearest hour)Number of hours spent doing leisure and sports activities per daySample A: Number of adults70 90 135 140 65Sample B: Number of adults80 80 130 135 75Dan concludes that adults spend a mean of 3 hours each day doing leisure and sports activities. Bret thinks the mean is 4 hours. Who is correct-Dan or Bret?Explain your answer in two or three sentences. Make sure to use facts to support your answer. The pattern 96, 92, 88, 84, ________ follows the "subtract 4" rule. Study the pattern to find traits that are not obvious in the rule. Explain.pleas in one or 2 sentences The development of nation-states began Caitlin wants to determine if a tomato plant grows better in potting soil or dirt. Which of the following describes the best set up to conduct this type of investigation? You roll a six-sided number cube and flip a coin. What is the probability of rolling a number greater than 1 and flipping heads? Write your answer as a fraction in simplest form. Please please help please now coffee snacks worms story 1.near the end of the story, Bradford writes, He pulled himself off the stool and headed for thedoor, then stopped to stare back at her for a moment. There was a strange, unreadable look on hisface, but all he said was, Thanks. Why would the boy have an unreadable expression at thismoment? What could he have been thinking? State the biological importance of hydrotropism and phototropism. Suppose we have a stick of length 1.a) We randomly uniformly choose a point and break the stick into two pieces.Find the expected length of the smaller piece.b) We randomly uniformly choose two points (independently) and break thestick into three pieces. Find the probability that the three resulting piecescan be arranged to form a triangle (i.e. all triangle inequalities are satisfied;i.e no piece is longer than the sum of the other two). 15. Assuming the fluorescence threshold is set to be 1. Which gene has the highest gene expression rate? What is the Ct value? Gene with highest expression = ______________ Ct value = _______________ Pure mathematicsssss A painter made the table below to show the amount of paint it takes to cover a certain amount of square feet. The amount of paint varies directly with the area of each wall.Amount of Paint and Size of WallArea of wall feet squared, x64144400Amount of paint (pints), y4925How much paint should the painter expect to use to paint a wall with an area of 256 square feet?16 pints32 pints128 pints225 pints please please please answer!! will give brainliest and extra points! Why Valuable medicinal herbs are found in mountain region? PLS HELP ASAP! 20 PTSevaluate . ...................... river that originates in Himachal Pradesh reaches the Thar desert. Ganga Sindhu The Ghaggar SOMEONE PLEASE HELP ME ITS URGENT (PICTURE) Imagine you are going to conduct a research project based on this excerpt. Which research question is the most effective for this topic?A. What grievances, complaints, and injustices did the womens rights activists at the Seneca Falls Convention include in A Declaration of Sentiments when they wrote it in 1848?B. How did suffragettes work to obtain the rights outlined in the Seneca Falls Declaration of Sentiments?C. Did any other womens rights conventions occur in 1848?D. How has A Declaration of Sentiments affected America? Hispanics patterned their civil rights movement after which of the following groups? Which ancient civilization was an ancestor of the Hopi and Pueblo tribes?A. AztecB. Mound BuildersC. AnasaziD. Maya