C1.1 Flashcards
Everything in the environment is made up of ________.
Everything in the environment is made up of chemicals
All living things are made up of chemicals and depend on chemicals to _________.
All living things are made up of chemicals and depend on chemicals to survive.
_______ _________ are a major factor in causing chemical changes in the environment
Human beings are a major factor in causing chemical changes in the environment
Human activity’s release _________ into the air water and soil everyday.
Human activity’s release chemicals into the air water and soil everyday
Farmers must have a good understanding of _________ to produce good crops.
Farmers must have a good understanding of chemistry to produce good crops
Define fertilizer
A substance that enriches soil so that plants will grow better
Although fertilizers are beneficial for plant growth, too much can be ________.
Although fertilizers are beneficial for plant growth, to much can be harmful.
If fertilizers enter ponds, streams, lakes, or rivers they can alter the ____________ of chemicals, and cause green plants and algae to overgrow
If fertilizers enter ponds, streams, lakes, or rivers they can alter the concentration of chemicals, and cause green plants and algae to overgrow
Fertilizers contain what three basic nutrient elements??
- Nitrogen (N)
- Phosphorus (P)
- Potassium (K)
_______ kills or controls weeds
Herbicides kill or control weeds
______ kills or controls insects
Insecticides kills or controls insects
________ kills fungi
Fungicide kills fungi
How much of the worlds food would be lost to pests is pesticides weren’t used
50%
Problems with pesticides:
- can be harmful to people and other non pests
- might not be selective (kill non-pest species)
- can stay in the environment for to long
What is solid waste??
- garbage from households industrial plants commercial buildings construction etc.
- includes everything from large machinery to bottles
