In the new six kingdom system of classification, the six kingdoms may be grouped into three domains. the four kingdoms that are grouped in the domain eukarya all contain organisms a) are consumers. b) are multicellular. c) that have cell walls made of cellulose. d) composed of one or more eukaryotic cells

What happens to the average kinetic energy of water molecules as water freezes?

Which of the following may one conclude from a map that shows the average ph value of rainfall in the u. s.? acid rain is a more serious problem on the east coast. acid rain falls equivalently across the continental u. s. there are more factories on the west coast. the midwest has fewer forests than the rest of the u. s.

Which statements explains what the fossil records indicates? check all that apply. a) earth is 4.5 billion years old b) many organisms have become extinct c) mammals have always existed on earth d) mass extinctions have occurred several times on earth e) the amount of water on earth has decreased over time?