Answer: The correct answer is -
D) giraffes having increasingly longer necks over time.
Natural selection is an evolutionary mechanism that was proposed by Darwin.
According to this mechanism, organisms that are better capable of adapting to their changing environmental conditions, survive and increase their number through reproduction whereas other are eliminated from the population.
Example - Long neck of Giraffe, which is much elongated, lofty stature, that was beautifully adapted for browsing on the higher tree branches. This was an adaptation with slow and gradual change in the gene frequency as the lower vegetation was eaten by other animals. Due to this, giraffes had to search for other source (that was higher tree branches).
This is considered as a peculiar example of natural selection.
Answer:
Alkali Feldspar
This very common mineral can be pink or sometimes a light brick-red, though usually, it is closer to buff or white. A rock-forming mineral with a pink or pinkish color is almost certainly feldspar.
Explanation:
I don't know about minerals but this one looks like that and has the same texture
I am not sure, but I think it is an ameoba.
Answer:
D. Absorption and Transpiration
Explanation:
Since the question is asking about water recycling:
A. is incorrect because cellular respiration <em>uses</em> water, so the process doesn't recycle water.
B. is incorrect because water doesn't evaporate from the plant or else it'd die.
C. is incorrect because when plants decay they are already devoid of water.
