Ecology and the ecosystem

Question 1

Biodiversity

Answer 1

measure of the range of species living within an ecosystem

Question 2

What do abiotic and biotic mean?

Answer 2

Abiotic means non living
Biotic means living

Question 3

Abiotic factors (4)

Answer 3

Light intensity
Temperature
Moisture level
soil pH and mineral content

Question 4

Biotic factors (4)

Answer 4

Food availability
New predators
New pathogens
Competition

Question 5

Trophic levels

Answer 5

• Producers
• Primary consumer
• Secondary consumer
• Tertiary consumer
• Decomposers

Question 6

Pyramid of numbers

Answer 6

shows population of each organism at eat trophic level of food chain

Question 7

Pyramid of biomass

Answer 7

shows relative dry mass

Question 8

What is the efficacy of biomass transferred calculation?

Answer 8

(Biomass transferred to the next level/ Biomass available at the previous level) x 100

Question 9

Carbon cycle

Answer 9

Respiration
Photosynthesis
Decomposition
Combustion

Question 10

Respiration in the carbon cycle

Answer 10

• plants + animals aerobically respire, releasing CO2 into air.

Question 11

Photosynthesis in the carbon cycle

Answer 11

Plants remove CO2 from air through photosynthesis

Question 12

Decomposition in the carbon cycle

Answer 12

Dead pants + animals are broke down by decomposers. Carbon is then released to atomosphere

Question 13

Combustion in the carbon cycle

Answer 13

Plants + fossils fuels are burnt, CO2 released into atmosphere

Question 14

name 2 air pollutions

Answer 14

Sulfur dioxide
Carbon monoxide

Question 15

What is sulfur dioxide

Answer 15

released when fossil fuels are burnt. creates acidic rain killing organisms. it letches to minerals out of soil so plants and trees cant survive.

Question 16

Carbon monoxide

Answer 16

Released when fossil fuels are burnt through incomplete combustion. binds to haemoglobin which reduces O2 compacity. leads to tiredness or unconsciousness.

Question 17

Green house gas

Answer 17

gases that absorb infrared radiation from the sun trapping it above earth’s surface leads to increase in earths temp.

Question 18

Effects of global warming

Answer 18

climate change
water level rises
loss of habitat

Question 19

effects of deforestation

Answer 19

imbalance O2 and CO2n
disturbance to cycle
soil erosion