The biotic and abiotic factors interacting with each other in a pond form
A) an ecosystem B) a community
C) a population D) a food web

Six amino acids have side chains that are polar but not charged. these are serine (ser), threonine (thr), cysteine (cys), asparagine (asn), glutamine (gln), and tyrosine (tyr). these amino acids are usually found at the surface of proteins, as discussed in the proteins 2 module.

The answer is going to be a because ik that i’m right