Answer:
A or B
Explanation:
To be honest both are accurate.
The earth was once formed by molten layers of the earth and over time layers began to form due to the relative melting points. hope this helps :D
This is extremely vague, but assuming this is regarding concentration gradient in the nervous system, the Sodium-Potassium pump is responsible for transporting sodium and potassium.
Answer:
uuh theres not an example please comment under this post to me the options
Explanation: