In a species of birds, some have larger beaks and some have smaller beaks. The birds with larger beaks are able to eat more food. This means they are better at surviving and reproducing. Which concept of natural selection is this describing

MODERN THEORY OF EVOLUTION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	Acquired characteristics
B	Survival of the fittest
C	Reproductive isoluation
D	Descent with modification

Explanation:

Detailed explanation-1: -Because the drought reduced the number of seeds and finches with bigger beaks were able to eat the larger and harder seeds so more of them survived.

Detailed explanation-2: -The ancestors of this bird species encountered a tree with larger than average sized seeds. They discovered that by stretching their beaks, the beaks would get longer, and this increase was passed on to their offspring. Over time, the bird beaks became larger.

Detailed explanation-3: -1: Darwin’s Finches: Darwin observed that beak shape varies among finch species. He postulated that the beak of an ancestral species had adapted over time to equip the finches to acquire different food sources.

Detailed explanation-4: -The five theories were: (1) evolution as such, (2) common descent, (3) gradualism, (4) multiplication of species, and (5) natural selection.

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