Which of the following is transported by the blood?
a. gametes
b. glycogen
c. heat
d. starch

Which of the following protists gets nutrients mainly by absorbing molecules from other organisms through their cell walls and cell membranes? a. amoebas b. water molds c. ciliates d. slime molds

Which characteristics are typical of a human population in the postindustrial stage?

Which type of organism is a caterpillar