It depends if you're talking about Physical Science or Physics/Biology -- so, I'll give both definitions (:
Physical Science: the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass.
Physics/Biology: a dense organelle present in most eukaryotic cells, typically a single rounded structure bounded by a double membrane, containing the genetic material.
Hope that helped! (:
3) a glacier because a river would be a V shape, mud flow would cause the valley to have flat bottom
The microbe 'Virus' causes HIV.
There are four main types of noncovalent bonds in biological systems: hydrogen bonds, ionic bonds, van der Waals interactions, and hydrophobic bonds. The bond energies for these interactions range from about 1 to 5 kcal/mol.
Answer:a compound consisting of a nucleoside linked to a phosphate group. Nucleotides form the basic structural unit of nucleic acids such as DNA.
Explanation:
