Which of the following uses a protein to move a molecule across a cell membrane without energy?
O A. Active transport
OB. Facilitated diffusion
O c. Simple diffusion
OD. Osmotic pressure

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

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid

How far away is the nearest black hole from earth?