Answer: a. the lowest trophic level
Explanation:
The keystone species is the one on which the entire ecosystem depends upon. It maintains a balance in the ecosystem. If this species is removed the ecosystem will drastically change. The members of the keystone species are abundantly available at the lowest trophic level. This will help in making a balance in a community or ecosystem. If some members die others will be available to survive others.
<span>It helps because it slows the flow of the water down the slope and little by little the water will get soaked up and by the time it gets to the bottom. i think that is the correct answer
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Technically there is no direct connection between air pressure and humidity. Humidity is the amount of water vapor in the air or air parcel. Air pressure is its weight of the air in a column, the true connection is in the temperature.