b16

Question 1

what is biotic and abiotic factors

Answer 1

That an ecosystem is the interaction of a community of living organisms (biotic) with the non-living (abiotic) parts of their environment.

Question 2

How to describe the different levels of organisation in an ecosystem
species
population
community

Answer 2

Species - organisms that can reproduce to produce fertile offspring
Population - organisms of the same species in a habitat
Community - all the populations of organisms in a habitat

Question 3

what is interdependance

Answer 3

That within a community each species depends on other species for food, shelter, pollination, seed dispersal etc. If one species is removed it can have a knock on effect on the whole community. This is called interdependence.

Question 4

What is a stable community

Answer 4

That a stable community is one where all the species and environmental factors are in balance so that population sizes remain fairly constant.