Life on Earth- Topic 2

Question 0

What is competition?

Answer 0

Is when two members of a community compete for a resource that is in short supply

Question 1

How can energy be lost at each stage?

Answer 1

Growth
Movement
Heat
Digest food
Faeces

Question 2

What is interspecific competition?

Answer 2

Different species competing

Question 3

What is intraspecific competition?

Answer 3

Same species competition

Question 4

What is a food chain?

Answer 4

Shows the flow of energy from one organism to another

Question 5

What is a pyramid of energy?

Answer 5

A diagram that shows the quantity of energy available at each level of the food chain

Question 6

What is a pyramid of numbers?

Answer 6

Shows the number of organisms at each level of the food chain

Question 7

What is pyramid of biomass?

Answer 7

A diagram that shows the total mass at each level of the food chain

Question 8

Name the 4 different bacteria involved in the nitrogen cycle

Answer 8

Nitrogen fixing
Decomposers
Nitrifying
denitrifying

Question 9

What does the nitrogen fixing bacteria do?

Answer 9

Convert nitrogen gas to nitrate

Question 10

What do the Decomposers do?

Answer 10

Convert protein to ammonium compounds

Question 11

What does nitrifying bacteria do?

Answer 11

Convert ammonium compounds to nitrite or nitrite to nitrate

Question 12

What does denitrifying bacteria do?

Answer 12

Convert nitrate to nitrogen gas