IMPACT OF ENVIRONMENTAL CHANGE

How do environmental conditions affect communities

Environmental conditions affect the abundance and distribution of organisms within communities

What are examples of environmental conditions affect communities

Temperature

Soil pH

Light intensity

Give an example of how environmental conditions have affected a community

Rising global temperatures have been linked to the extinction of frog species **(their skin makes them more vulnerable to temperature changes)**

How can different temperatures be bad for certain communities

**TOO LOW** temperature: growth is **slower** as organisms will use **more energy to stay warm**

**TOO HIGH** temperature: organisms can **die** and water will become limited as **evaporation increases**

How can changes in water levels affect ecosystems

Animals may have to migrate to find water

Melting ice caps may destroy the habitats of some animals

How can atmospheric gases affect ecosystems

Some organisms cannot survive when certain gases are present

Polluted water can cause illness

What detrimental impacts can sulfur dioxide have on the environment

Can dissolve in water to form acid rain: erodes buildings and pollute water sources

What detrimental impacts can carbon monoxide have on the environment

Binds irreversibly to haemoglobin: prevents it from carrying oxygen

Too much can cause death and unconsciousness

How is sulfur dioxide formed

Fossil fuels containing impurities are burnt

How is carbon monoxide formed

Incomplete combustion of fossil fuels

Name 5 greenhouse gases

Water vapour

Carbon dioxide

Nitrous oxide

Methane

CFs

Give 3 human activities that contribute to greenhouse gases

Burning fossil fuels

Deforestation

Large scale livestock farming

How do greenhouse gases lead to global warming

Greenhouse gases allows heat from the sun to enter the atmosphere

The gases trap the heat in the atmosphere

State 3 negative consequences of global warming

* Sea levels rise caused by melting icebergs
* Disrupted farming and agriculture
* Increases spread of diseases in warmer climates