Question

Before the presence of living organisms earth was a very different place match each fact about about Precambrian earth to the sphere most affected

Answer 1

The correct matches are:

- Atmosphere - Oxygen spilled into this sphere from ocean waters;

The majority of the oxygen in thee Precambrian Earth was not in the atmosphere, but instead it was in the ocean waters. With the emergence of life, large portions of this oxygen went into the atmosphere as it was released as a waste product.

- Biosphere - Cyanobacteria started to emerge as a life form;

The cyanobacteria were one of the earliest life forms. They were producers, and started to use the process of photosynthesis in order to produce food. The usage of this process caused lot of changes on the Earth later on.

- Hydrosphere - Oceans contained far less salt than they do today;

The rocks and minerals in the Precambrian Earth were not weathering and eroding in the manner they are now. Instead they were kept compact for much longer periods, influencing the mixture of of different components with the water as well in meantime.

- Lithosphere - Oxidation in rocks and minerals was not possible;

Because there was way to small amount of oxygen in the atmosphere, very close to 0%, the oxidation of rocks and minerals was not possible, as the oxygen is the gas that causes this process.

Answer 2

Four external spheres compose the Earth. These are the lithosphere, the hydrosphere, atmosphere, and biosphere. 2) A- , 3) B-, 1) C-, 4) D-.

What are the external layers ofthe earth?

The Earth is composed of external layers, also known as spheres, that may superpose to each other. These are,

• Lithosphere ⇒ composed of plates, continents, the ground, and every solid rock on the Earth's surface. It includes the crust and part of the mantle.

• Hydrosphere ⇒ composed of liquid, solid, and gas water on the Earth.

• Atmosphere ⇒ refers to the layer composed of air. It is formed by oxygen, nitrogen, carbon dioxide, and water vapor.

• Biosphere ⇒ refers to the space inhabited by any form of life, including the air -atmosphere-, the ground -the lithosphere-, and water -hydrosphere-.

Any change that occurs in any of these layers will affect or influence the other layers as well.

According to this information we can answer the question as follows,

• 2) Biosphere ⇒ A) Cyanobacteria began to emerge as a life-form

• 3) Hydrosphere ⇒ B)  Oceans contained far less salt than they do today

• 1) Atmosphere ⇒ C) Oxygen spilled into this sphere fro ocean waters

• 4) Litosphere ⇒ D) Oxidation in rocks and mineral was not possible

You can learn more about the spheres of the Earth at

https://brainly.com/question/24215268

https://brainly.com/question/17011734

#SPJ5