An example of a grad-school level question?
The cones of a jack pine tree require great amounts of heat to release their seeds. When are jack pine tree seeds most likely released?

An example of a grad-school level question?
Evidence that living things have evolved over hundreds of millions of years can be found in

An example of a grad-school level question?
Estuaries in Florida often have mangrove trees growing in them. The roots of the mangrove trees slow the flow of the water, which allows soil particles to settle. If people were allowed to remove the mangrove trees, how would the estuary environment most likely be affected?

An example of a grad-school level question?
What do playing a guitar, banging a drum, and dropping a pebble in the water have in common?