If old mountains are worn down over the course of millions of years, what is one of the primary reasons that mountains still exist?

a.

new mountains are created through tectonic and volcanic activity.

b.

new mountains are created from decomposition of plants and animals.

c.

new mountains are created from leaf litter.

d.

new mountains are created through city development.

A because tectonic and volcanic activity is how mountains are created. Also, the other options don’t make any sense for this question.

1. a host loses nutrients to a parasite

2. a parasite only benefits when the host is alive (cause if the host dies the parasite dies with it )

3. producers to consumers

4. the tapeworm is a parasite

5. they convert energy from the sun (photosynthesis)

6. sunflower-robin (i think im 80% sure)

7. producer

8. consumer

9. prey

10. fresh water snails ( cause the green algea is the producer and the snails are the primary consumers and the small fish consumer so is the big fish)

the correct answer is d