What best explains the graph shown below?

A. Temperature are dropping because greenhouse gasses are high and increasing

B. Temperatures are dropping because greenhouse gasses are high and constant

C. Temperatures are dropping because greenhouse gases are low and constant

D. Temperatures are dropping because greenhouse gasses are low and decreasing

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.

Which is the correct formula for photosynthesis

How would this hypothesis different from the scientific law a. increases gene flow b. eliminates fixed alleles c. allows divergence to occur d. stops adaptive radiation