(Question)
Q: At what age is skeletal maturity reached by humans? Choices: - 40 - 30 - 15 - 20 A:
(Answer)
20

(Question)
Q: What type of speciation occurs when groups from the same species are geographically isolated for long periods? Choices: - asexual - symbiotic - prokaryotic - allopatric A:
(Answer)
allopatric

(Question)
Q: What are the two classifications of natural resources? Choices: - renewable and reusable - productive and nonrenewable - recyclable and reversible - renewable and nonrenewable A:
(Answer)
renewable and nonrenewable