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In a few generations, this population of beetles changed.

Which is the most likely explanation for the change?
The beetle population moved to a greener habitat.
A natural disaster almost caused the extinction of the population.
The beetle population’s food sources decreased dramatically.
A mutation resulted in a new color of insect.

In a few generations, this population of beetles changed.  Because:

The beetle population moved to a greener habitat.

Explanation:

The reason behind the answer is that adaptation as an evolution process will always make the best-suited survivors inherit the traits their parents had. Because those are the ones that allowed them to increase their chances to survive. Therefore, the morphology changes and the animals that have traits that match their environments will have more chances to survive than those that don't have traits that match their environment.

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.