The excretions of living organisms are best categorized as which type of factor in an environment?

Compare the composition of the moon's surface with the composition of the earth's surface.

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.

Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.