Which of the following correctly describes when plants began to colonize early earth?
a. after the dinosaurs went extinct
b. before prokaryotes first dominated the earth
c. directly before the age of reptiles
d. before eukaryotes grouped together to form multicellular organisms

Which particle controls what element an atom is?

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

Clara wrote the following hypothesis for an experiment about acidophilic bacteria. bacteria cells will stop dividing in a basic (alkaline) environment because of the high ph. which statement is the best way to restate the hypothesis so that it is more specific? growing acidophilic bacteria in some environments will cause the cells to stop dividing because of ph. if the ph of their environment is changed, acidophilic bacterial cell division will be affected. if the environment of acidophilic bacterial cells becomes alkaline, the bacteria will stop dividing. the more alkaline an environment, the less cell division will occur in bacteria.