When a water-bearing porous layer of rock, sand, or gravel is trapped between upper and lower layers of less permeable substances, it is _______.
The region of a lake where plants are able to attach to the bottom and still reach above the surface is known as the __________.
In thermohaline circulation of global current systems, surface water is ________.
less salty, less dense, and warmer
The area that underlies the shallow water bordering continents is called the ________.
Why are coral considered mutualistically symbiotic organisms?
Because coral reefs are a combination of an animal and an algae.
Overpumping groundwater in coastal areas can cause ________ to move into aquifers, making the water undrinkable.
Xeriscaping can save water by ________.
planting native or drought-resistant plants with little or no water requirements
If oil accumulates in a body of water in small amounts over time as a result of leaks from boats and runoff from land, then this oil pollution is from _____________.
What is the direct cause of death for the aquatic animals during eutrophication?
a loss of dissolved oxygen in the water
Which of the following statements about drinking water is true?
Most bottled water is just purified tap water.
The "blue-baby" syndrome that suffocates infants is a consequence of excess ________ in the water supply.
_______ is water that has been used and then treated before releasing back into the environment?
A 2003 study reported that ________% of large-bodied fish and sharks were lost in the first decade of industrialized fishing.