COMPLETE QUESTIONS AND SOLUTIONS
CERTIFICATION READY
◉ Phosphorous cycle
Answer: Phosphorous trapped in oceanic sediments moves onto
land after a geological upheaval
◉ Evolution
Answer: change in allele frequencies in a population over time
◉ How are humans like primates
Answer: Flexible limbs, opposable thumbs, binocular vision, large
brains, one infant at a time
◉ When did humans become land bound
Answer: 6-7 million years ago
◉ When did humans have a modern sized skull,flatter face, and
smaller teeth than before
Answer: 2 million years ago