Which pair of organisms below represents the flow of energy from a terrestrial to an aquatic ecosystem? 1.fly to frog
2.mouse to hawk
3.garter snake to eagle
4. pondweed to snail
please don’t guesss 44 points

the answer is a or when it says crossing over

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

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".

c is the answer to this question. altitude affects the weather because air molecules evaporate.