A chemical that is essential for life. You can only live a few days without it.
What is water?
100
A compound that dissolves in water to form a solution with a pH lower than 7.
What is an acid?
100
In plants this macronutrient is important in root and flower growth.
What is phosphorous?
100
This feature of water is not a good indicator of water quality.
What is clarity?
100
These are the three stages of transport of substances in air.
What are:
1.) Release of the chemical
2.) Dispersion of the chemical in the atmosphere
3.) Depostion of the chemical in soil or water.
200
Trees, mountains, the air we breathe, our own bodies - everything that makes up the environment is made of these.
What are chemicals?
200
A compound that dissolves in water to form a solution with a pH higher than 7.
What is a base?
200
In humans, this macronutrient is important in muscle contraction and nerve impulses.
What is potassium?
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
The name of the tiny spaces between soil garins.
What are pores?
300
We benefit from products such as gasoline, electricity and pesticides but by using them, we may be harming these two things.
What are the living (biotic) and non living (abiotic) environment?
300
The difference between one number and the next on the pH scale represents this much of a difference.
What is a ten fold difference?
300
In plants, this macronutrient is important in production of fruits and grains?
What is sulfur?
300
If the pH is below this number you will not many fish there, especially young ones.
What happens when the water dips below a pH of 5?
300
Reducing the concentration of a pollutant by mixing the polluting substance with large quantities of water.
What is dilution?
400
The process of changing free nitrogen so that nitrogen atoms can combine with other elements for form compounds the organisms can use.
What is nitrogen fixation?
400
The reactants and products of a typical neutralization reaction?
What are an acid/base (reactants) and a salt/water (products)?
400
A key macronutrient in the composition of chlorophyll structure.
What is magnesium?
400
The diversity of organisms living in a particular water way will decrease when (a) increases and (b) decreases.
What is (a) acidity and (b) dissolved oxygen?
400
The process by which nature uses living things to clean up the environment.
What is biodegradation?
500
This is the type of waste that that includes the garbage that is collected from households, industrial plants, commercial buildings, institutions and construction and demolition sites.
What is solid waste?
500
Acidic lakes are sometime treated with this.
What is calcium hydroxide (lime)?
500
In humans, this macronutrient is important in the composition of bones and teeth, blood clotting and muscle and nerve function.
What is calcium?
500
Higher concentrations of these two nutrients will cause an increased growth of algae and bacteria in water ways.
What are phosphorous and nitrogen?
500
A technique that can be used to reduce the concentration of harmful chemicals in soil or groundwater.