5. Which of the following statements is true about natural systems?

im sorry i dont see and question or anwsers to help maybe tryb reposting

Explanation:

B. Producers are at the bottom level of both the energy pyramid and the biomass pyramid.

Explanation:

 Both the biomass pyramid and the energy pyramid have producers at the bottom.

Producers account for most of the biomass and most of the available energy in any  given ecosystem.

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.

protein makes up the building blocks of organs, muscles, skin, hormones and pretty much everything that matters in your body.

some choices are:

peanut butter

seeds

eggs

yogurt

meats

fish

so pretty much meat, dairy, nuts, and grains.