Data must be considered valid for scientists to trust conclusions. which is the best way to increase the validity of data in an
experiment?

a. get many scientists' opinions of the data.

b. measure data in sl units.

c. carry out two or fewer trials.

d. record only the most significant observations.

Which element provides strength to the exoskeleton of clams and oysters

What are genotypes? what are phenotypes?

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.