Construiți enunţuri adevarate (total 10), utilizând limbajul ştiinţific adecvat pentru fiecare din următoarele conţinuturi: pericard, miocard, mica circulație, nefron, capilare, hipertensiune, cistită, tetracameral, piramide renale, uretere.

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Below, the levels of organization in a multicellular organism are shown from least to most complex. which level of organization can be described as several different types of tissues working together to perform a common task?

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?