Scientific investigations begin by asking questions that can be tested, measured, or both. which question meets this criterion? what opinions do teenagers have about vaccines? do hand sanitizers decrease a person’s risk of a bacterial infection? is buying organic food an ethical choice? how hard is it for people to reduce stress in their lives?

In which case would a scientist choose to use a dissecting microscope rather than a compound microscope

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. chinchilla x chinchilla 1/2 agouti, 1/2 chinchilla 3/4 agouti, 1/4 chinchilla all chinchilla