Answer:
The main use of a beak is for feeding. Since beaks are mainly used for feeding, the variation in beak shape and size mostly has to do with the food that each species prefers. Some beaks are made for digging seeds out of shells while others are designed to dig deep into the ground to pull out prey items.
The correct answer is option D, Speciation
In the allopatric speciation, the geographical barriers such as mountains or rivers causes isolation of the population. The two population groups get completely separate from each other and thus develop different sexual preferences for mating.
Answer:
The answer is B and C.
Explanation:
I just took the test and this was the correct answer. Hope this helped:)
Answer:
14. Carcinogenic
15. Not sure. I believe it is monoclonal antibodies.
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