Available energy increases at it is transferred from one organism to another in a food chain true or false

"Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level. ... A food chain can usually sustain no more than six energy transfers before all the energy is used up."  By the way this is from the internet but from what I read it should be false mark brainllest if you want.

Explanation:

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.