Density is mass per unit of volume. Which pair of lab instruments would a student use to measure the density of seawater?
• a caliper and a flask
• a stopwatch and a beaker
• a balance and a beaker
• a meter stick and a temperature probe

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000

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.

When are the centromeres broken in meiosis?