Sympatric speciation
i. is common in animals but rare in plants.
ii. initially involves a physical geographic separation of individuals from a single population into two separate populations.
iii. can result in the formation of a new species within a few generations.

The correct answer is III. can result in the formation of a new species within a few generations.

Explanation:

When a population from a species who live in the same habitat isolate reproductively and form new species then this process is known as sympatric speciation. This speciation mainly results from the generation of polyploidy condition.

In polyploidy condition the chromosome numbers in the individuals become double. This condition most commonly occurs in plants. Then these polyploid plants can not reproduce with other diploid plants but can fertilize itself so it create a reproductive isolation with other members and produce new species. So in sympatric speciation formation of new species occurs within a few generations.

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)