Sexual reproduction first evolved among the:
A) land-dwelling vertebrates
B) insects
C) amphibians
D) marine organisms
Correct Answer:
Verified
Q9: During the follicular phase of the female
Q10: The lining of the uterus builds up,ready
Q11: Choose the most effective means of birth
Q12: During the third trimester of development,the major
Q13: The layer of cells called the endoderm
Q15: The portion of the body that ultimately
Q16: All birds practice internal fertilization,even though most
Q17: A relationship between the developing embryo and
Q18: The developing embryo is termed a fetus
Q19: Ovulation in human females is triggered by:
A)a
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