<em>Leaves fall from broken branches only if they were dry.Any others will not fall</em>
Selective pressure can be a driving force of evolution; option A.
<h3>What is selective pressure?</h3>
Selective pressure refers to external forces which affect an organism's ability to survive in a given environment.
Selective pressure can either decrease or increase the occurrence of a trait.
Therefore, selective pressure can be a driving force of evolution.
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The term used to describe the organisms overall attempt at maintaining balance or equilibrium of it's internal environment is called Homeostasis.
<span>Animals gradually adapt to changes within their environment over time. This gives them a better chance of surviving rather than going extinct because of the change. Say there is a gene mutation affecting color within a population of beetles in a rain-forest. All of the beetles used to be red, but now a few of them have experienced a gene mutation and are green. Because they live in a rain-forest, it is likely that the green beetles would blend in with their surroundings far better than the original red beetles, and those red beetles would be wiped out by predators because they are easier to spot. The green beetles would live on and flourish, and their population would increase. Soon there would be few or none red beetles, and many green beetles.</span>
Our sun is located in the Orion arm, or the Orion spur of the milky way galaxy
