Subduction zones occur at the boundaries between

a nations
b oceans
c plains and forested lands
d tectonic plates

D tectonic plates

Explanation:

Subduction is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced to sink due to high gravitational potential energy into the mantle. Regions where this process occurs are known as subduction zones.

This appears on google when you look up where do subduction zones occur.

b. the carbon cycle ensures living things have a source of hydrogen

the eggs of the insects should be the first thing collected at the scene.

false