Water Unit Test Review

What percent of diseases in developing countries are caused by unclean water?

• 10%
• 20%
• 80%

The largest use of water worldwide is

• industry
• agriculture
• homes

Most people in the world have clean water and sanitation.

• True
• False

When a species is harvested to the point it is not profitable to harvest anymore it is called

• commercial extinction
• mass extinction
• endangered

What do you call species that is accidently trapped in fishing nets and lines?

• target species
• bycatch
• chickens of the sea

Which of the following is a good thing (benefit) of fish farms?

• antibiotics and fish waste pollute local rivers
• reduce the amount of fish caught in the wild
• overcrowding and disease

It is better for us and the environment to eat what...(think about the fish farm videos we watched)

• only herbivores
• lower on the food web
• higher on the food web

Which of the following is not a disinfection method used by city treatment plants.

• desalinization
• chlorine
• uv light

One of the biggest threats to aquifers and other groundwater sources is...

• overpumping
• too much precipitation
• invasive species

Which of the following is a benefit of dams?

• clean drinking water
• hydroelectric power
• all of the above