Substances in the Environment
Pollution
Acids and Bases
Monitoring Substances
Transport of Materials
100

In humans, this macronutrient is important in the composition of bones and teeth, blood clotting and muscle and nerve function.

What is calcium

100

A harmful substance released into the environment

What is a pollutant

100

A substance with a pH higher than 7

What is a base

100

The amount of substance required to kill half of a polulation

What is Lethal Dose 50 (LD50)

100

A source of pollution in which pollutants are diffused and originate from no specific location

What is a non-point source

200

The nutrient that is used as a source of natural oils and stores energy.

What are lipids

200

A type of chemical designed to kill plants

What is herbicide

200

Any precipitation that has a pH less that 5.6

What is acid precipitation

200

This is the name given to the types of organisms that live in water to help determine water quality.

What are biological indicators

200

Reducing the concentration of a pollutant by mixing the polluting substance with large quantities of water or air.

What is dilution

300

The three major plant nutrients in commercial fertilizers

What are nitrogen, phosphorus, and potassium

300

Increased concentration of a material as it moves up the food chain

What is biomagnification

300

NaCl and H2O are always products of this reaction

What is neutralization

300

When the effects of a toxin cause serious harm after one dose.

What is acute toxicity

300

The process by which nature uses living things to clean up the environment.

What is biodegradation

400

The process of nutrients entering a plant through the roots

What is active transport

400

When runoff containing N, P, K makes its way to bodies of water this occurs

What is algal bloom

400

The difference between one number and the next on the pH scale represents this much of a difference.

What is a ten fold difference?

400

The result of the equation (solute/solvent x 1 million)

What is parts per million (ppm)

400

The movement of solvent particles across a semipermeable membrane from a dilute solution into a concentrated solution

What is osmosis

500

The nutrient responsible for healthy DNA/genetic material

What is nucleic acid

500

Term for the human activities which have increased the greenhouse gases in the atmosphere leading causing rising temperatures and climate changes.

What is enhanced greenhouse effect

500

Acidic lakes are sometime treated with this.

What is calcium hydroxide (liming)

500

The diversity of organisms living in a particular water way will decrease when (a) increases and (b) decreases

What is (a) acidity or temperature and (b) dissolved oxygen

500

A technique that can be used to reduce the concentration of harmful chemicals using plants

What is phytoremediation