A star will attract other objects (such as another nearby star, or a planet) gravitationally; in turn, according to Newton's Third Law, it will also be affected gravitationally by the other object. That is, if star "A" attracts star "B", then star "B" will also attract star "A".
The hydrogen in water causes the speed of light to slow down. When it exits, the air and gravity cause it to speed up again. It gets the energy from gravity.
Pyruvic acid enters and carbon dioxide exits.
the bladder
The Cell membrane.
The cell membrane
THEY DON'T.
Stomata.
anywhere anyhow anyway anywhen head
The cell membrane controls what enters and exits a cell.
Water enters and exits a cell by osmosis, which is the diffusion of water.
The cell membrane regulates what enters and exits the cell.
the cell membrane.