The proteins in the cell membrane allow substances to come or go, based on their concentrations. this is an important part of which maintains the immediate conditions necessary for life
a.) osmosis
b.) metabolism
c.) homeostatis
d.) endocytosis

What will happen to a population of predators if there is a sudden, temporary increase in the number of prey? a. the population of predators will be uniform with no change. b. the population of predators will increase first and then decrease slowly. c. the population of predators will increase continuously.

Could someone me with number one you

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi, r^3 , where r is the sphere’s radius.