First to answer with a correct answer gets it is hard to believe, but the desert and the tundra have a lot in common! the most obvious is that both biomes have little available water. what plant adaptations would you expect to see in these two biomes? include four adaptations you might see in both biomes.

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 best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes