Read this sentence from the main text: All of this new information should make us think twice about things like antibacterial soap, which gets into our water supply.

What purpose does this sentence serve in the closing paragraph?
To argue that we kill too many beneficial bacteria
To create concern about the water supply
To introduce a new topic that needs scientific study
To suggest the new science of microbes may affect many things

What is a codon and where is it found

The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.

14) whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.