A skydiver dives from an airplane. The amount of air resistance she is met with is measured at each second following her jump. Time after jump Weight Air Resistance 1 seconds 500 N 200 N 2 seconds 500 N 300 N 3 seconds 500 N 400 N 4 seconds 500 N 500 N Which statement best identifies her speed at each second? A. The data suggests she will be going faster at second 5 B. The data suggests she has the slowest speed at second 2 C. The data suggests she has the fastest speed at second 4 D. The data suggests she has the fastest speed at second 1

Cedure,© data: rmativetable 1: positive and negative results when imacromoleculeregative results when testing for the presence of macromoleculeschemical test | positive test result negative tcarbohydrates – simplesugarse negizitivecarbohydrates – 2: results for the presence of macromolecules in the evidence sample

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.

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?