In aquatic ecosystems, biomass is the least at which trophic level?
a.) autotroph
b.) herbivores
c.) carnivores

2points what is the term for a female reproductive cell? a. egg b. chromatid c. allele d. fertilization

If the rna molecule in a human has the nucleotide sequence of guu, this would the amino acid valine would be needed to make the protein. how would this cha process was occurring in a mushroom?

The two tubes contain bromothymol blue. after 24 hours, what will the color of the water be in tube b? a. green (it won't change) b. yellow c. blue d. colorless (clear)