relationships in an ecosystem

Question 1

what is an ecosystem

Answer 1

a biological community of interacting organisms and their physical environments

Question 2

how can we conserve habitats and why?

Answer 2

national parks, poaching laws, conservation laws, recycling and management of waste, car and burning fossil fuel reduction, reduction of deforestation

this is essential for the protection of the planet to preserve it for future generations

Question 3

how can we estimate population size in plants

Answer 3

use a quadrant and place at random, count the number of organisms you are investigating of a few random areas and get an average

Question 4

how can we estimate population size in animals

Answer 4

capture-mark-release-recapture

Question 5

what has an affect on the size of population

Answer 5

natural - competition, predation, natural disasters
humans - poaching, climate change, destruction of habitats, hunting

Question 6

what is environmental variation

Answer 6

variation that is controlled by the environment e.g. tattoos, scars, contagious diseases

Question 7

what is inherited variation

Answer 7

variation that is controlled by genes and inherited from your parents and family members e.g. inherited diseases, hair colour, eye colour

Question 8

what is continuous variation

Answer 8

variation that has no limit on a value that can occur within a population. there are not set groups it is usually measured on a numerical scale e.g. height, weight)

Question 9

what is discontinuous variation

Answer 9

variation that is in set groups. it is normally controlled by genetics. e.g. eye, colour, gender, hair colour