The amount of energy available decreases from producer to first order, second order and third order consumers true
false

False

Explanation:

According to the food chain, energy increases up

That is,the first order is grass,which the second order(cow) feeds on,then the third order(Man) feeds on.

answer; i believe is(b)converging

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".