Answer:
The appearance of free oxygen in the Earth's atmosphere led to the Great Oxidation Event. This was triggered by cyanobacteria producing oxygen which developed into multicellular forms as early as 2.3 billion years ago
Explanation:
To clarify what I said here are some questions to help!
How did oxygen first appear?
Whiffs in the air is how oxygen first appeared billions of years ago.
For the most part, scientists agree that oxygen, though lacking in the atmosphere, was likely brewing in the oceans as a byproduct of cyanobacterial photosynthesis as early as 3 billion years ago
When was oxygen found?
2.33 billion years ago
Since its first appearance 2.33 billion years ago, oxygen accumulated in high enough concentrations to have a weathering effect on rocks just 10 million years later.
I don't know if this helped you but if it does, please let me know!
Question
<em>Define enzyme concentration.</em>
Answer:
<em>Substrate concentration is the amount of substrate present that can be turned into product and is most commonly measured in molarity (moles per liter). The concentration of substrates is often used to measure enzyme activity, which is based on the rate of a reaction (product formed over time).</em>
Hope this helps!
Eubacteria lives in a normal environment.
Answer:
Option C
Explanation:
Specific adaptations to imposed demands.
This SAID principle asserts that our bodies will respond specifically to demands that are placed on it. It can occur notwithstanding age or sex.
In this case study, the trainer is imposing the demand to become more explosive, then the client has to continually train explosively.
