Environmental Science Quiz

What are microscopic bubbles of gaseous oxygen mixed in water and available to aquatic organisms for respiration?

• Hydrogen

• Oxygen

• Nitrogen

• Carbon dioxide

What is the measure of how acidic or basic a liquid is?

• Salinity

• pH

• Temperature

• Density

What are inorganic compounds that can be found in nature and in several foods we eat?

• Nitrates

• Carbonates

• Sulfates

• Chlorides

What is important in metabolism and are frequently used in fertilizers?

• Calcium

• Magnesium

• Potassium

• Phosphates

What is a measure of how clear water is?

• Turbidity

• Salinity

• pH

• Temperature

What is water safe enough for drinking and food preparation?

• Brackish water

• Potable water

• Saltwater

• Wastewater

What is rich in organic and mineral nutrients and supporting an abundant plant life which, in the process of decaying, depletes the oxygen supply for animal life?

• Desalination

• Eutrophication

• Sedimentation

• Aeration

What are organisms used to monitor the health of an ecosystem?

• Predators

• Pathogens

• Bio-indicators

• Parasites

What is a system of interrelated components, including the processes of precipitation, evaporation, transpiration, infiltration, groundwater flow, streamflow, etc.?

• Geothermal system

• Hydrologic system

• Atmospheric system

• Ecosystem

What is a poisonous chemical that is used especially to kill insects and weeds?

• Arsenic

• Mercury

• Lead

• Cadmium