Which group of fish do scientists believe amphibians evolved from?

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes