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.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.