Freshwater makes up 3% of the Earth’s water. Why is only 1% available for use? A. The other 2% is trapped in the oceans.

B. The other 2% is trapped in glaciers.

C. The other 2% is water vapor trapped in the atmosphere.

D. The other 2% is trapped in streams and lakes.

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a.m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed

Which environmental change would most likely result in bullfrog offspring that are able to store more water than bullfrogs in previous generations?