1.over time, the mushrooms that grow in a certain forest have been overharvested by humans. as a result, the number of mushrooms in the area has decreased dramatically.
fewer forest trees will become infected with harmful dutch
elm disease.
carbon dioxide levels will decrease since mushrooms
release it when they make food.
the amount of oxygen released into the air will decline and the forest plant life will eventually die off.
dead plant and animal waste will build up on the forest floor, attracting pesky insects and scavengers.

Dead plant and animal waste will build up on the forest floor, attracting pesky insects and scavengers

Explanation:

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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.