Match these items. 1. molecules are made up of these
snow
2. two or more different atoms chemically joined
atoms
3. head of a comet
coma
4. crystals of water that fall from the sky
compound
5. form of water called water vapor
gas

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

An easy way to calculate the amount of energy available at each level is to what?

Which group of molecules are targeted by the kinases in order to control this movement