For humans, calcium, zinc, and iron are all examples of...
What is an inorganic nutrient or mineral.
A technique that can be used to reduce the concentration of harmful chemicals in the soil or groundwater by planting trees and other vegetation.
What is Phytoremediation?
These chemicals were largely responsible for the hole in the ozone layer.
What are CFCs
Method used to reduce the effects of acid rain in lakes.
What is liming.
These two gases react to form acids in the atmosphere and contribute to acid rain.
What are sulfur dioxide and nitrogen oxides.
Name two of the four types of organic nutrients.
What are carbohydrates, lipids, proteins (amino acids), vitamins.
This is a measurement for how much of a substance is required to kill half of a group of test animals.
What is LD50.
What type of compound in NSO4?
What is Molecular or covalent?