Question 4: Suppose there were changes in the habitat that caused this actual value. What might a combination of those changes be?

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Suppose the climate in a habitat changes. Over time, the amount of precipitation decreases by 20 percent. It will affect the habitat because those species adapted to drier environments will replace species less suited to the new climate.

Explanation:

This best situation explains the reason for adaptation and those that adapted quickly will replace those finding it hard to adapt, hence; their would be replacement of species as those that are able to thrive will be comfortable with the sudden change in the environment. Charle's Darwin theory comes in place, survival of the most fittest to the new environment.

the answer is c. it will give up it's valence electron to the other atom.