Question

Which of the following is true of biogeochemical cycles?

Option 1: They create new atoms to replace lost ones.
Option 2: They ensure that nutrients are only used once by organisms.
Option 3: They can be affected by human activity.
Option 4: They increase the total amount of matter over time.

Answer 1

Biogeochemical cycles recycle nutrients and elements through ecosystems. They can be affected by human activity.

Step-by-step explanation:

Biogeochemical cycles are processes that recycle nutrients and elements through an ecosystem. They involve the movement of minerals like carbon, nitrogen, phosphorus, and sulfur between living organisms and the environment. One true statement about biogeochemical cycles is that they can be affected by human activity, such as pollution or oil spills, which can damage ecosystems and potentially cause global climate change.