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Photosynthesis. Oxygen molecules are released as a by product of photosynthesis, which causes iron to rust. The rust on rocks also proves we had an abundance of oxygen 2.5 billion years ago, which was caused by cyanobacteria ( and others as well maybe ).

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Related Questions

Do rocks absorb oxygen?

No, rocks do not absorb oxygen. Rocks are composed of minerals and do not have the ability to undergo the chemical process of absorbing oxygen.


What is the process causing rocks to change composition when reacting with oxygen?

oxidation


What process by which iron in rocks react with oxygen is called?

This is an oxydation reaction.


Which form of weathering most likely caused the reddish coloring of the rocks in the photo?

Oxidation weathering most likely caused the reddish coloring of the rocks in the photo. This process occurs when minerals containing iron are exposed to oxygen, leading to the formation of iron oxide, which gives the rocks a reddish hue.


What does the chemical weathering called oxidation cause?

Oxidation in chemical weathering causes minerals containing iron to rust or oxidize when exposed to oxygen in the presence of water, resulting in the breakdown of the minerals and alteration of the rock. This process can lead to a reddish or orange color developing in the affected rocks or minerals.


How does oxygen cause the chemical weathering of a rock?

Oxygen can react with minerals in rocks, such as iron, leading to oxidation reactions that break down the mineral structure. This process, known as oxidation, weakens the rock and can cause it to crumble or disintegrate, contributing to the chemical weathering of the rock.


What kind of weathering do acids and oxygen cause?

It reacts with The minerals in The rocks, such as in feldspar.


Process that cause rocks to break apart?

ewan ko


Is chemical weathering when rocks are being broken down into soil and sand?

Yes, chemical weathering is the process by which rocks are broken down through chemical reactions, resulting in the formation of soil and sand. This process is primarily driven by factors such as water, oxygen, and acid rain that interact with the minerals in rocks and cause them to chemically decompose.


What is the process that breaks down rocks by changing their composition?

Chemical weathering is the process that breaks down rocks by changing their composition through chemical reactions with substances like water, oxygen, and acids. This can alter the minerals within the rock and cause them to dissolve or transform into new minerals.


How does oxygen weather rock?

Oxygen can combine with certain minerals in rocks through oxidation, leading to chemical weathering. This process can weaken the rock structure and cause it to break apart over time. This is particularly common in minerals such as iron, which can rust when exposed to oxygen.


What type of weathering causes rocks to decay?

Chemical weathering is the process that causes rocks to decay by breaking down minerals through chemical reactions. This can be caused by exposure to water, oxygen, carbon dioxide, and other substances that cause minerals to dissolve or change composition.