interaction with ecosystem

Question 1

ecology

Answer 1

study of rls between living things and non living things

Question 2

population

Answer 2

grp of organisms of the same species living tgt in a same habitat

Question 3

community

Answer 3

diff populations that lives tgt

Question 4

habitat

Answer 4

a place where organism live and reproduce. provides food and shelter, not no protection

Question 5

ecosystem

Answer 5

complex system of interactions between living things and their environment

Question 6

examples of ecosystem

Answer 6

desert, ponds, rivers

Question 7

biotic environment

Answer 7

interactions of living things

Question 8

parasitism

Answer 8

abiotic or biotic? 1 species gain benefits from causing harm to the host.

Question 9

predator-prey

Answer 9

abiotic or biotic? Predator kills and consumes prey in a very short period

Question 10

mutualism

Answer 10

abiotic or biotic? Interaction between two species that benefit each other.

Question 11

commensalism

Answer 11

abiotic or biotic? one species gains benefit WITHOUT causing harm

Question 12

abiotic factors

Answer 12

Air, temp, water, light, minerals, acidity

Question 13

light

Answer 13

• provides warmth
• helps with photosynthesis
• find food and avoid danger

Question 14

temp

Answer 14

affect growth, activities and survival of organisms

Question 15

air

Answer 15

• oxygen needed to survive
• CO2 for photosynthesis

Question 16

water

Answer 16

• basis substance to survive as every living cell is mainly made up of water
• habitat for marine life

Question 17

acidity

Answer 17

determine type of organism living in the habitat

Question 18

diff between scavengers and decomposers

Answer 18

scavengers handle larger remains, while decomposers break them down further into nutrients.

Question 19

reason for lost of energy

Answer 19

• Respiration
• Removal of undigested food
• Radiation from body

Question 20

how much energy is transferred to the next trophic level

Answer 20

10%

Question 21

over-hunting

Answer 21

• over fishing disrupts the marine ecosystem, causing population of fish to decrease
• Animals become extinct or endangered as they are being hunted for food, recreation purpose or body parts

Question 22

deforestation (animals)

Answer 22

• destruction of vast areas to provide land
• damages animals habitat

Question 23

deforestation (AIR)

Answer 23

• enhanced greenhouse effect, increase in global warming
• when forest cleared, soil exposed
• topsoil can be washed away, causing soil erosion
• may cause landslides
• a reduction in trees mean less oxygen is given out

Question 24

structural VS behavioural

Answer 24

structural - physical feature
behavioural - behaviour

Question 25

photosynthesis

Answer 25

CO2 + water = glucose + O2

Question 26

respiration

Answer 26

• Glucose + O2 = CO2 + water
• occurs 24/7

Question 27

respiration and breathing

Answer 27

breathing does not involve chemical reaction, LUNGS and ATMOSPHERE
Respiration takes place in ALL body cells, chemical reaction

Question 28

minerals

Answer 28

soil