Select the correct answer. In an ecosystem, marsh snails feed on phytoplankton and painted turtles feed on marsh snails. Pollution has resulted in the depletion o
phytoplankton. What effect would this situation likely have on the populations of marsh snails and painted turtles?
OA. The population of marsh snails will decrease, but the population of painted turtles will increase.
OB. The population of marsh snails will increase, but the population of painted turtles will decrease.
Ос. The populations of marsh snails and painted turtles will increase.
OD.
The populations of marsh snails and painted turtles will decrease.
OE. The populations of marsh snails and painted turtles will not be affected.

Which of the following statements is correct in hour our immune system responds to a potential pathogen? a. the adapted immune system will call on the innate immune system to destroy the pathogen. b. b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c. the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. d. the t-cells in the adapted immune systems are the first to recognize the pathogen vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a. antigen, antibody b. antibody, antigen c. antibody, antibiotic d. antibiotic, antibody