An example of a grad-school level question?
What will be the most likely result for some species of animals with the continued burning of rain forests in Africa?

An example of a grad-school level question?
Which material is primarily a mixture of weathered rock and organic matter?

An example of a grad-school level question?
A condition in bees called "colony collapse disorder" occurs when worker bees leave the hive to collect nectar and never return. How would a decline in the bee population most likely affect a farm ecosystem?

An example of a grad-school level question?
Water moves by capillary action through soil from moist areas to dry areas. Which property of water is most responsible for this capillary action?