Answer:
3. Cells are the basic units of all living things.
Explanation:
Difficult because it went against basically everything that was previously believed to be true
Answer:
an individual must have two copies of a recessive allele to express the trait.
Explanation:
Answer:
Explanation:
If the solids were not remelted by impact as they collected to form the planet, the volatiles they carried would have been incorporated in the solid planet.