Un gobierno no regula la caza de sus especies nativas. Esto conduce a la extinción de varias especies de grandes mamíferos. Este es un ejemplo de
¿qué amenaza a la biodiversidad? *

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

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

One of the reasons that stars are so large is because