3- Organisms in their Environment

Question 1

what do food chains always start with and why?

Answer 1

food chains always start with a plant as they can trap light and convert it into chemical energy in food by photosynthesis

Question 2

what is poison build up?

Answer 2

some poisons can concentrate through food chains, with devastating effects, usually for the top carnivore.

Question 3

what is a producer?

Answer 3

they use the suns energy to produce food energy

Question 4

primary consumer?

Answer 4

an animal which eats producers

Question 5

top carnivore?

Answer 5

is not eaten by anything else

Question 6

what is the order or a food chain

Answer 6

producer
primary consumer
secondary consumer
tertiary consumer
top carnivore

Question 7

why is so much energy lost in a food chain

Answer 7

the number of organisms decreases as you go from one trophic level to the next

Question 8

if a food pyramid was changed to represent the total mass of the organisms at each level, what would it be?

Answer 8

a pyramid of biomass

Question 9

what is a sustainable development?

Answer 9

sustainable development is development which enables us to meet the needs of today without impairing our ability to meet the needs of tomorrow

Question 10

environment

Answer 10

all the conditions that surround a living organism

Question 11

habitat

Answer 11

the place where an organism lives

Question 12

population

Answer 12

all the members of a single species that live in a habitat

Question 13

community

Answer 13

all the populations of different organisms that live together in a habitat

Question 14

ecosystem

Answer 14

a community and the habitat in which organisms live