If each level in a food chain typically loses 90 percent of the
energy it takes in, and the producer
level uses 1000 kcal of energy, how
much of that energy is left after the
third trophic level?

i think its white blood cells

i hope this

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.