Is it common for natural populations to be in Hardy-Weinberg
equilibrium? Explain.

Hardy-Weinberg (PHW) (also Hardy-Weinberg equilibrium, Hardy-Weinberg law or Hardy-Weinberg case) states that the genetic composition of a population remains in equilibrium as long as natural selection and no other factors act and do not produce any mutation That is, the Mendelian heritage, by itself, does not engender evolutionary change. It is named after the English mathematician G. H. Hardy and the German physician Wilhelm Weinberg, who established the theorem independently.

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explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.