Which statement best compares segmented worms and roundworms? some segmented worms have setae, but roundworms do not. some roundworms have setae, but segmented worms do not. segmented worms have sense organs, but roundworms do not. roundworms have sense organs, but segmented worms do not.

Some segmented worms have setae but roundworms don't

Explanation:

Most segmented worms including earthworms and marine worms have setae that help them grip onto things and move. The setae is not found on roundworms or on flatworms either so that is why the answer is, some segmented worms have setae but roundworms don't.

Explanation:

Question: Which statement best compares segmented worms and roundworms?

Choices:

- Some segmented worms have setae, but roundworms do not.

- Some roundworms have setae, but segmented worms do not.

- Segmented worms have sense organs, but roundworms do not.

- Roundworms have sense organs, but segmented worms do not.

The answer is "Some segmented worms have setae, but roundworms do not." Semented worms usually live underground and have setae to move around. Roundworms are usually parasites living inside a host so they have no need to move.

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

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: