Env Sci, Tuesday Opener, 3.20.19

Runoff from agricultural land carries chemicals from fertilizers and can eventually cause what? 

• aquatic life to die
• result in subsidence
• change the flow of natural waterways
• a drought to occur

A town in Texas had to be evacuated because houses were sinking. What is the likely cause of this problem?

• heavy rains over saturated the land
• over building polluted the ground water
• excessive removal of groundwater weakened the ground
• runoff from fertilized land created a dead zone

Overflow during a heavy rainstorm from a wastewater treatment plan would result in what?

• polluted runoff into nearby ponds
• flooding in the local aquifer
• weakened housing foundations
• over-treated drinking water

What can runoff contaminates cause in a lake, river, or stream?

• the earth to sink
• the water in an aquifer to drop
• harmful rapid growth of algae
• cleaner water for bathing

A paper company wants to build a paper mill in the watershed where a village exists. In order to minimize pollution, where would be the best place to build it?

• at the highest point in the watershed
• downstream from the village
• closest to freshwater
• near a main street in the village

Pollutants from a factory that enters the water in a watershed will have negative effect on which?

• local pond life
• rainfall rates
• direction of river flow
• available space for crops

Which is an explanation for of why a well drilled into an aquifer would fail to produce water?

• pollutants have seeped into groundwater
• over pumping has exceeded rain water replenishment 
• algae has killed local pond life
• runoff containing chemicals has caused a dead zone

The movement of colored water through gravel in a clear cup best models what?

• condensation
• surface runoff
• conservation of water
• pollution of groundwater

Droughts forces towns to pump out almost all of the water held in aquifers. Which is a result?

• stability of the underground rock will be weakenend
• excessive growth of plants
• rainfall levels increase
• a dead zone will be created

Rapid growth of algae in a pond is a result of what?

• loss of habitat
• flooding
• excess nutrients from fertilizer runoff
• clogged river tributaries