Mutualism would be thae correct anwer
Answer: A gene that exhibits multiple phenotypic expression.
Answer:
Jane belongs to the greens
Mary belongs to the Reds
Answer: white blood cells
Explanation: They fight off the bad bacteria.
Gravity , Explosion
<u>Explanation:</u>
Nebulae are made of dust and gases—mostly hydrogen and helium. The dust and gases in a nebula are very spread out, but gravity can slowly begin to pull together clumps of dust and gas. As these clumps get bigger and bigger, their gravity gets stronger and stronger.
Eventually, the clump of dust and gas gets so big that it collapses from its own gravity. The collapse causes the material at the center of the cloud to heat up-and this hot core is the beginning of a star.