A lunar eclipse occurs when:

When a plant performs photo synthesis, it produces____________as a byproduct.

An above-ground suburban water tank holds 540 gallons of water when full. If the tank starts out full and is drained at a rate of 60 gallons per minute, how many seconds will it take to empty out halfway?

Extreme care must be exercised to ensure proper handling and cleaning of soiled U.S. flags. A torn flag may be professionally mended, but a badly torn or tattered flag should be destroyed. When the flag is in such a condition that it's no longer a fitting emblem for display, destroy it in a dignified manner, preferably by burning.
According to this passage, torn flags should be:

A ripsaw cuts: