Farmers use artificial selection to select certain traits from fruits to animals to produce more or from some kind of demand if I have not answered your question please let me know but have a nice day (:
Answer:
there are less consumers in an ecosystem than producers, making the consumer section at the top of the pyramid much more narrow than the consumer section.
Explanation:
An ecosystem needs more producers than consumers in order to survive, as all other lifeforms depend on them, which means there will always be more of them in a healthy environment, and they will produce more energy as well because of this.
<em><u>PLATO ANSWER:</u></em><em> </em>A and C
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