There is no answer that is right except for C. Natural Selection.
Genetic Recombination doesn't change gene frequency;nor does migration. (Unless it's local)
Mutation could be the answer, but since mutations are too rare to really power Evolution, the only logical answer is Natural Selection.
Answer:
lava flows are very hot, thin and runny. When it cools is has a smooth to ropey texture because of the low silica content which makes it cool quickly. Pahoehoe flows creep along generally at less than 3 feet per minute but some flows have been measured at over 20 miles per hour.
Explanation:
it is A
Explanation:
It's a soft metal, reactive and with a low melting point, with a relative density of 0,97 at 20ºC (68ºF).
Answer:
The tentacles.
Explanation:
The both form from the same developmental tissue
Cold-blooded animals have a higher rate of secondary productivity because their bodies can preserve energy, especially during the hibernation period. W<span>arm-blooded animals, on the contrary, releases more energy in a cold environment. This makes them hunt for more food to gain sufficient biomass and heat.</span>
