In two or more complete sentences, explain the responses of vomiting and fever. Be sure to state the stimuli that cause the response, and the purpose of the response. Which of the following is responsible for homeostasis on a cellular level?

pituitary gland
hypothalamus
cell membrane
nucleus

Which of the following statements is true?

The hypothalamus links the nervous system to the endocrine system.
Positive feedback occurs when the output of a system is reduced or stopped.
Negative feedback describes an undesired homeostatic response.
Sweating is an example of positive feedback.

Mike was adopted, and his biological family history is unknown. although he is healthy, he would like some understanding of his genetic makeup, including potential health risks and genes that he could pass on to his children. mike has heard about commercial laboratories that can compare segments of your dna to those of people with common hereditary diseases in order to give you some idea of how susceptible you are to the diseases. the results of these types of tests are highly inconclusive. if mike's dna showed that he shares similarities in a segment of dna with people who have a given disease, his chances of developing that disease or passing it on to his children may be slightly elevated, but they are not 100 percent. these tests can cost more than $2,500 and are not covered by many insurance companies. do you think that mike should undergo the genetic tests? explain your answer. what are the potential pros and cons of having such tests done? describe how the availability of these genetic tests might affect the frequency of genetic diseases in individuals and populations.

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.

Autonomous underwater explorers will be used to gather large-scale ocean information select the best answer from the choices provided ot