Vaccines are weekend forms of disease causing microorganisms which are given to patients to prevent diseases. after the vaccine is administered what response to the vaccine is triggered in the body?
a. secretion of antigens by lymphocytes
b. absorption of histamine throughout the body
c. production of temporary resistance to the disease
d. production of antibodies providing active immunity

In which situations is the principle of cross-cutting relationship useful in determining relative age?

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.

What is the main fuel source for the work of the cell