Earlier in history, the earth's atmosphere was most likely not friendly to organisms that needed oxygen to breathe. Today, however, the earth's atmosphere contains the oxygen needed for eukaryotic organisms. The oxygen was produced by cyanobacteria through the process of _____.

volcanism
photosynthesis
metabolism
respiration

Answers

Answer 1

Answer:

Photosynthesis

Explanation:

Photosynthesis- Processes That Produce Oxygen

Related Questions

A student draws a scientifically accurate
model of the solar system. Which is NOT a
piece of information that the student
needs to make their model?
O A) the size of Mars
O B) the shape of the Milky Way
galaxy
O C) the distance between the Sun
and each planet
O D) the shape of Earth's orbit

Answers

distance between sun and each planet

Based on the ages of the ocean floor in the Atlantic,
how long ago do you think Africa and South
America split apart?

Answers

Answer:

about 140 million years ago

The South Atlantic Ocean opened about 140 million years ago as Africa separated from South America. About the same time, India separated from Antarctica and Australia, forming the central Indian Ocean

Hi there! I can answer your question!

It was about 140 million years ago that the Africa and South America split apart. When the Gondwana began to split, Africa and South america also began to split with it! That is how the South Atlantic Ocean was made between Africa and South America.

Addition facts During the Jurassic period (180 million years ago) the western half of Gondwana was separated from the eastern half of it.The South Atlantic Ocean opened about 140 million years ago!The Africa and South America plate drifted apart, forming the Iapetus Ocean.

✅That is all! Thanks for asking this question✅

Can someone please help me sort these out from smallest to largest please?

Answers

Answer:

Neighborhood, County, State, Country, Continent

Explanation:

PLEASE HELP ME: Explain what the State of Nature is in your own words

Answers

Answer:

It is the exploratory life of people before societies really came to life...

Explanation:

Becuz my cat told me so...=!

Which of the following countries experience authoritarian rule?

i. Kazakhstan
ii. South Korea
iii. Mongolia
iv. Uzbekistan

Answers

Answer:

I think it is South Korea

Explanation:

Answer:

GUYS. the answer is A, don't choose B

Explanation:

I got an 80% when I chose B, and then I got 100% when I chose A.

It's Kazakhstan, not South Korea.

Edge 2021

Which of the following is something citizens should do, but do not have to?

a. Civic Necessity
b. Civic Duty
c. Civic Responsibility
d. Civic Recommendation

Answers

Answer:

Explanation:

civic duty

everyone should clean up trash on side of the tads and pick up after their dogs and kids but no one ever does ( this is an example of vivid duty ) doing things for the earth and making sure your doing something helpful for others

C. Civic responsibility

This means things like voting or helping others in your community. A civic duty is required and is something like going to court

Commercial center where goods are received and reshipped

Answers

Answer:

Entrepôt

Explanation:

How does the ocean floor close to the center slit differ from the ocean floor near

the side slit?

Answers

ANSWER: The height of the ocean floor near the middle slit is much greater than the elevation close to the side slit. This disparity influences the depth of the ocean since the water depth would also be higher as the elevation and pressure are higher.

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