Answer:
They are not violent killers because they need their host to stay alive for their benefit And if the host dies the parasite wont have a host so they try to keep it alive for as long as possible.
Explanation:
<span>The Answer is B: They could use the Benedict's test; it would not have a positive reaction for sucrose but it would for the other three sugars.</span>
Air, water, some kind of food or sustenance <span />
Simple, we are learning about new things every day we as a human race learn something new about our world