What are the functions of T memory cells? To remember a specific antibody and to manufacture the corresponding antigen when needed To remember a specific antigen and to stimulate the immune system to react faster to invasion To recognize antibodies and to halt the activation phase in the immune system To recognize antigens and to begin the activation phase in the immune system

In the context of the neural impulse, which of the following is true about the depolarization of neuron membranes?

An ecologist is studying the effects that a population of predators is having on a population of a prey. he used data from the field to produce this graph. which conclusion can draw from the graph?

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.