The sound of a police siren that is moving away has wavelengths, and one that is approaching has wavelengths

Identifying the elements of hypothesis-based science this experiment is an example of hypothesis-based science. what question did the researchers ask? what question did the researchers ask? can predation result in selection for color patterns in guppies? do female guppies prefer to mate with males with bright color patterns or drab colors? do male guppies in pools with pike-cichlid fish have brighter color patterns than females in the pool? do killifish prefer to prey on juvenile guppies or adult guppies?

Has anyone taken the genetics unit test in connexus? not looking for answers, just a little bit what to expect and some with studying.

What if the yeast were extremely active and produced more than 100ml gas. would you know? why/why not