The answer would be C valleys formed by a glaciers.
Answer:
Sorry if I'm wrong but I think it's B
Explanation:
A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts or human activities such as specicide and human population planning.
Answer:
Chromosomes are made up of DNA(deoxyribosenucleicacid) which is a protein complex called chromatin that is organized into subunits called nucleosomes. The way in which eukaryotes compact and arrange their chromatin also helps regulate gene expression.
Explanation:
Well there are 4 things in a dna molecule and that is adenine guanine thymine and cytosine well the DNA molecule keeps the cell moving in the right direction and also helps the cell reproduce and stay healthy
Answer:
Tyrosine derived neurotransmitters
Explanation:
These neurotransmitters are produced as a result of the conversion of tyrosine when not incorporated into proteins or energy production is converted to catecholamines.
These catecholamines includes dopamine, norepinephrine, and epinephrine.
All these three catecholamines produce various effects in numerous locations in the body acting either as a neurotransmitter or as a hormone
