*PLEASE ANSWER Which of the following describes schooling?

a.) a group of marine animals coexisting in a group of a dozen or so

b.) fish moving in tightly packed groups, often at high speeds moving in near unison with extreme agility and never touching

c.) a group of marine animals from diverse species living together in a relatively small area

Photosynthesis converts solar energy into what type of energy?

Which best describes meiosis? a. it produces cells that are identical to the original cell b. it is responsible for the replacement of damaged skin cells c. it is responsible for growth of the organism d. it produces male and female sex cells

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.