Unit C section 1,2 Flashcards
(70 cards)
How do sanitary landfills work
they are made of plastic liners and compacted clay
what are pesticides?
Chemicals used to kill pests
Define base
Solution with pH HIGHER than 7
a substance with a pH scale of 3 is __ times more __________ than a substance with a pH of 4
10 acidic
what do these numbers on fertilizers mean? 15-20-10
15% nitrogen 20%phosphorus 10%potassium
What is sour gas
Gas containing hydrogen sulphide
Define acid
Solution with pH LOWER than 7
What 2 products are a result of neutralization?
Water and salt
Define pollution
Any change in the environment that produces a harmful condition
What do sanitary landfills do
Prevent chemicals from getting to the soil
what is effluent
Treated waste water
9 macronutrients for plants?
hydrogen,oxygen, carbon, nitrogen, phosphorus,potassium, calcium, magnesium, sulfur
6 macronutrients?
Nitrogen, potassium, phosphorus, magnesium, calcium, sulfur
Protein is a source of________
Energy, repair
What are nucleic acids made up of
Phosphate, ribose and nitrogen
Define nitrogen fixation
changing free nitrogen into useful compounds
What are lipids made up of
Carbon , oxygen and hydrogen
What is a substrate
The material in which an organism moves or lives
Amino acids make up ________
Protein
what are carbs made up of?
Carbon, hydrogen and oxygen
proteins a source of
Enzymes
What does pH measure ?
The concentration of hydrogen ions in a solution
what is the range of the acidic scale
0-14
0 on the pH scale is ________
Very acidic
