ORGANISING AN ECOSYSTEM

Question 1

DEFINE A PRODUCER

Answer 1

ORGANISMS WHICH CAN MAKE THEIR OWN ENERGY FROM CARBON DIOXIDE USING SUNLIGHT FOR ENERGY(PLANTS)

Question 2

DEFINE a primary consumer

Answer 2

Organisms which eat producers (Herbivores)

Question 3

DEFINE a secondary consumer

Answer 3

Organisms which eat primary consumers (carnivores)

Question 4

DEFINE a tertiary consumer

Answer 4

Organisms which eat secondary consumers ( carnivores)

Question 5

What do the arrows in a food chain represent

Answer 5

the transfer of energy from one organism to another

Question 6

define evaporation

Answer 6

the process in which liquid turns to gas

Question 7

define transpiration

Answer 7

the loss of water from leaves by evaporation

Question 8

define condensation

Answer 8

the process in which gas becomes liquid by cooling

Question 9

define precipitation

Answer 9

water that falls to the ground as rain, snow, sleet or hail

Question 10

define run off

Answer 10

the precipitation not absorbed by the soil

Question 11

define aquifer

Answer 11

an underground layer of rock which contains groundwater.
supplies water to wells and springs

Question 12

list the sources of carbon

Answer 12

combustion
decomposition
respiration

Question 13

list the sinks of carbon

Answer 13

PHOTOSYNTHESIS

Question 14

Describe the carbon cycle

Answer 14

Carbon is added to the atmosphere by animals respiring, burning fuels and decomposing.
Carbon is removed from the atmosphere by plants

Question 15

describe the decay cycle

Answer 15

Decomposers break down waste
They release carbon dioxide, water and minerals as they grow
These products are used by other organisms

Question 16

DESCRIBE complete combustion

Answer 16

Burning in a good supply of oxygen

Question 17

describe INCOMPLETE COMBUSTION

Answer 17

burning in a limited supply of oxygen