Question

Which of the following is true of biogeochemical cycles?

Choose 1 answers
They ensure that nutrients are only used once by organisms.
They increase the total amount of matter over time.
They can be affected by human activity,
They create new atoms to replace lost ones.

Answer 1

a

Step-by-step explanation:

i got it right

Answer 2

Answer: They can be affected by human activity.

Step-by-step explanation: