Solid because it maintains their shape and is rigid
in this case the answer would be letter "D"
I'm assuming this is the same image that was posted before, therefore the answer is "gene flow" which occurs through population groups by natural selection and other factors.
The answer is, "B", "Developing country".
False, people with red hair and freckles don’t have any advantages over people who don’t have them
Molecule, organelle, cell, tissue, organ, organ system, organism, community, population, ecosystem, biosphere
