B1.6

Question 1

What conditions cause decay to occur fastest?

Answer 1

~ Oxygen
~ Moist
~ Warm temperature

Question 2

What are the two main types of decomposers?

Answer 2

~ Bacteria

~ Fungi

Question 3

What are the main waste products of decay?

Answer 3

~ Carbon dioxide

~ Water

Question 4

Why does decay happen?

Answer 4

Because dead plants and animals still have nutrients in them, but these nutrients need to get back in the soil

Question 5

Why is oxygen needed for decay?

Answer 5

The microbes need it to respire

Question 6

What do microorganisms produce by respiring?

Answer 6

Heat

Question 7

Why is it important to turn compost bins?

Answer 7

~ To allow microbes to mix
~ Allows oxygen to reach all parts
~ Spreads heat which stops it from overheating from all the respiration heat

Question 8

Where do fossil fuels come from?

Answer 8

The remains of plants and animals millions of years after dying

Question 9

What contributes to global warming?

Answer 9

~ Combustion

~ Respiration

Question 10

What happens in the carbon cycle?

Answer 10

~ Green plants and algae photosynthesis and respire
~ Animals respire
~ As microbes eat dead plants and animals they respire
~ Carbon in plants is converted to carbs, fats and proteins when eaten by animals
~ Combustion of wood and fossil fuels