Explique como a célula consegue manter a diferença de concentração dos íons sódio e potássio dentro e fora dela e por que é necessário esse processo.

Iwill give brainiest to first person who gets it ! what are 3 basic types of interactions we see in an ecosystem?

The first three phases of the cell cycle are collectively known as (1 point) play audio cellular respiration. telophase. mitosis. interphase.

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -