Our middle aged sun is approximately how old

Why is it critical that equal amounts of DNA are shared between homologous chromosomes?

Which descriptions best describe a primary consumer

What type of biomolecule can be found in the nucleus and carries instructions for the cell?

Prokaryotic and eukaryotic cell components

Oxidative phosphorylation is the third step in cellular respiration. It is composed of two smaller steps (electron transport chain and chemiosmosis). What molecules are donating their energy to power the proteins in the ETC?

3. How big is the Clark Refractor in Arizona?

Radioactive uranium-235 has a half-life of 704 million years. If it was incorporated into dinosaur bones, could it be used to date the dinosaur fossils?

hurricanes can damage or destroy barrier islands. suppose a barrier island that separates an estuary from the ocean was damaged by a storm: how would this affect the estuary

A cell with a chromosome number of four undergoes meiosis what is the result

How does acid precipitation cause chemical weathering?