Answer:
A
Explanation:
Because the more species that live their can determine how well the environment is doing.And that their is enough resources for them to survive.
Enzymes.
because enzymes are a substance produced by a living organism that acts as a catalyst to bring about specific biochemical reaction.
The answer is; B is younger than D
In sedimentary rocks, the bottom layers are older that overlaying layers. This is because sediments are placed on top of each other by surface runoffs to ocean beds. Therefore, the first sediments to be deposited will always be towards the bottom as more and newer ones are brought in and deposited.
A)A chromosome is a long continuous strand of DNA
