All the areas of the planet that will support life a) biome b) biosphere c) ecosystem d) population

your best answer is Biosphere

it cools slower in the earth meaning the crystals have more time to form than lava on the surface

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.