Ecology and the Environment

Question 1

what is biodiversiy?

Answer 1

variety of different species of organism on earth, within an ecosystem.

Question 2

what is a habitat?

Answer 2

where an organism lives

Question 3

what is population?

Answer 3

all the organisms of one species in a habitat

Question 4

what is a comunity?

Answer 4

all different species in a habitat

Question 5

what is an ecosystem?

Answer 5

all organisms living in a particular area and all the non-living conditions.

Question 6

how are humans reducing biodiversity?

Answer 6

deforestation, pollution and global warming

Question 7

how do Abiotic factors affect communities?

Answer 7

Question 8

how do biotic factors affect communites?

Answer 8

Question 9

describe a practical using a quadrat to study the population size of small organisms.

Answer 9

Question 10

give an example of a food chain?

Answer 10

Question 11

explain why every time you go up a trophic level, the number of organisms go down?

Answer 11

this is because it takes a lot of food from the level below to keep one animal alive.

Question 12

explain how not all energy available to the organisms at a trophic level is passed on to the next level?

Answer 12

some parts of food such as roots or bones aren’t eaten by organisms so the energy isn’t taken in, some parts of food are indigestible so pass through organisms and come out as waste.

Question 13

explain the carbon cycle?

Answer 13

Question 14

explain the nitrogen cycle?

Answer 14