1. What are the 2 ways producers can produce food energy?

What type of pollution does household garbage cause

You sample a population of butterflies and find that 56% are heterozygous at a particular locus. what should be the frequency of the recessive allele in this population?

American scientist, linus pauling, was one of many scientists racing to discover the molecular structure of dna. pauling initially thought that the molecule was a triple helix. later, james watson and francis crick unveiled their double helix model, which turned out to be an accurate description of the molecule's shape. why did watson and crick succeed when pauling failed?