The graph shows ice core data that illustrate historical trends in the amount of carbon dioxide in Earth's atmosphere. Scientists attribute global warming
to recent increases in human activities that produce carbon dioxide. Which
kind of data would show that a new solution to the problem of global
warming is working?

A. Historic atmospheric CO2 levels would be the same as current
levels
B. Current atmospheric CO2 levels would be increasing at a steady
rate.
C. Historic atmospheric CO2 levels would no longer appear to
increase over time.
D. Current atmospheric CO2 levels would be increasing more slowly.

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

Select the word from the list that best fits the definition the temperature to which air must cool to be saturated

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.