Please list the following steps into the correct order for when our body is invaded by pathogens

How many variables are altered in a good experiment? a.1 b.0 c.2 d.3

Environmental differences within ecosystems are generally caused by

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.