Ecology

Question 1

A food web

Answer 1

A food web is to or more interconnected food chains

Question 2

Competition ( organisms )

Answer 2

Occurs when two or more organisms seek a resource that is limited

Question 3

Competition (plants)

Answer 3

Plants compete for light water , minerals and space

Question 4

Competition ( animals )

Answer 4

Animals compete for food , shelter ,territory and mates

Question 5

Adaptation

Answer 5

Are features that give an organism a better chance of surviving in their habitat

Question 6

Dandelions adaptations

Answer 6

Long roots to get water , competes for space to spread their seeds in the wind .

Question 7

Hedgehog adaptations

Answer 7

Excellent sense of smell to make them good at finding food
Spikes to fight off predators
Colour which makes them camouflaged so predators can’t find them easily .

Question 8

Energy

Answer 8

The energy in any food chain comes from the sun

The amount of energy gets less and less as you go along the food chain

Question 9

Conservation and pollution

Answer 9

Conservation is the protection , preservation and careful use of our natural resources . Our natural resources include land , rivers seas , plants and animals . If we don’t protect these the environment could be destroyed and plants and animals may become extinct .

Question 10

Pollution

Answer 10

Pollution is adding unwanted wastes to the environment causing damage to it . If one organism is damaged it can be harmful to many other plants and animals: the balance of nature can be damaged .

Question 11

Air pollution

Answer 11

Caused by smoke , dust and harmful gases - most of these come from cars , buses , factories and power stations .

Question 12

Acid rain

Answer 12

When fossil fuels are burnt they produce gases called carbon dioxide and suffer dioxide .
These dissolve opinion rainwater to form carbonic acid and sulfuric acid .
This acid rain damages plants and buildings .

Question 13

Soil pollution

Answer 13

Caused by pesticides , artificial fertilisers and acid rain . Chemicals sink in to the soil and can be absorbed by plants , get passed up the food chain and can cause illness .

Question 14

Water pollution

Answer 14

Rivers lashes and seas are polluted by fertilisers , sewage , oil and detergents , they cause to much plant growth , bacteria populations boom as they feed on dead plants and no oxygen is left for fish

Question 15

Incineration

Answer 15

Burning the waste , this can real ease dangerous gases into the atmosphere , difficulties with location nobody wants to live near and incinerator

Question 16

Land fill

Answer 16

Burying the dead sate in ground - damages soil , rivers and ground water , attracts rodents , disease causing , bad smell , difficulties as nobody wants to live near landfill sites

Question 17

3 R’s

Answer 17

Reduce Reuse Recycle