ORGANISATION

Question 1

define popualtion

Answer 1

species that occupy the same habitat

Question 2

define habitait

Answer 2

place where an organism lives

Question 3

define community

Answer 3

population of different species interacting

Question 4

define ecosystem

Answer 4

interactions between the biotic and abiotic factors in the area

Question 5

what do food chains shoew

Answer 5

the feeding relationships and the flow of energy

Question 6

define biomass

Answer 6

total mass of living material

Question 7

what are trophic levels

Answer 7

stages in the food chain

Question 8

what do arrows in the food chain represent

Answer 8

direction of biomass transfer

Question 9

describe a simple foodchaion

Answer 9

producer
primary consumer
seocnadyre consumer
tertiary consumer

Question 10

what is a producer

Answer 10

an organism that makes its own food

Question 11

what types of organism are producers

Answer 11

photosynthetic organism that trap energy from the sun

Question 12

what is a predator

Answer 12

a consumer that kills and eats other animals

Question 13

what is prey

Answer 13

an animal that is killed and eaten by another animal

Question 14

describe the pattern of predators and prey in a stable community

Answer 14

rise and falls in cycle s

Question 15

why are produces the first trophic level

Answer 15

provide all biomass for the food chain (production of glucose vat phtootysntehis)
the rest of food chain involves the transfer of this biomass

Question 16

what pices of apparatus measures the abundance and distribute. of organism in an area

Answer 16

quadrat

Question 17

what is sued to study the distribution of organism

Answer 17

transect

Question 18

describe the carbon cycle

Answer 18

plants turn co2 into molecules during photosynthesis
passed onto organism that eat the plants
released back into the atmosphere by respiration
burning fossil fuels also released carbon dioxide into the atompshere

Question 19

why si the cabron cycle important

Answer 19

for living organism to grow and provide energy for vital fucnitons in cells

Question 20

describe the water cycle

Answer 20

taken form lakes and oceans evaporates
water condenses into clouds and returns to earth as precipitation
useful for life on land
returns to rivers fan oceans by surface run off

Question 21

what effects can sulfur dioxide have on the environment

Answer 21

formed when fossil fuels are burnt

forms acid rain which damages buildings and plants

Question 22

what are the impacts of carbon monoxide

Answer 22

from incomplete combustion of fossil fuels

prevents haemoglobin carrying oxygen

Question 23

3 green house gases

Answer 23

water vapour
carbon dioxide
methane

Question 24

activities that contribute to green house gases

Answer 24

during fossil fuels
deforestation
large scale livestock farming

Question 25

how do green house gases lead to global warming

Answer 25

allow heat from sun to enter atmosphere

trap heat in atmosphere

Question 26

3 consequences of global warming

Answer 26

sea levels rise
disputed agriculture
increase spread fo disease in warmer climate