ecology

Question 1

environment

Answer 1

the conditions which surround and affect organisms in their habitat

Question 2

biodiversity

Answer 2

the range of a different species living in an area

Question 3

population

Answer 3

number of organisms of a single species living in an area

Question 4

community

Answer 4

the relationship between all living species in an area

Question 5

habitat

Answer 5

the place where an organisms lives

Question 6

ecosystem

Answer 6

the relationship between living species and their environment

Question 7

abiotic

Answer 7

non living factor that affects an organism
e.g temperature,ph,light,wind

Question 8

biotic

Answer 8

living factors which affect an organisms population
e.g predators,diseases,competition

Question 9

how do organisms lose energy

Answer 9

respiration
excretion
digestion

Question 10

decomposers

Answer 10

break down the organic compounds into their simplest components

Question 11

3 main carbon based molecules

Answer 11

carbohydrates ,protein and lipids

Question 12

carbon cycle

Answer 12

1.photosynthesis
2.feeding
3.respiration
4.decomposition
5.fossilisation
6.combustion

Question 13

nitrogen cycle

Answer 13

1.nitrogen gas in air
2.denitrification by bacteria
3.nitrogen in soil
4.nitrogen fixation
5.bacteria

Question 14

diffusion/active transport

Answer 14

high concentration to low concentration

Question 15

root hair cell

Answer 15

absorb water and minerals from the soil