How much time is needed to form most fossils?

a few months

a few years

hundreds of years

millions of years

Classify each description as true of introns only, exons only, or both. A-present in eukaryotic genomesB-generally absent from bacterial genomesC-part of the final mRNA strandD-code for an amino acid sequenceE-removed from initial mRNA strand prior

What occurs after a disturbance in primary succession?

Energy in organisms is called

List any five features of vertebrates

This is a biogeochemical cycle in which nitrogen is converted from its inert atmospheric molecular form (N2) into a form that is useful in biological processes.

Which statement is NOT true about subatomic particles? a. Protons are found in the nucleus. b. Neutrons have no electrical charge. c. Electrons contain much less mass than neutrons. d. Electrons are found in orbitals around the nucleus. e.

Witch came first the chicken or the egg

Which of the following genotypes could be described as homozygous dominant

Name some proteins that are made at ribosomes.

Which describes organs in the human body? the largest living unit a group of cells that work together to perform a common function a group of tissues that work together to perform a common function the smallest living unit