Living things

Living things: All the plant life in an ecosystem is called the flora. All the animal life in an ecosystem is caleld fauna. Other living things are fungi, microorganisms and bacteria.

The environment: Physical elements in an environment include air, water, soil, sunlight, temperature and climate.

Population: When population with each other they form a community.

One of the most important relationships involves energy. Energy moves through food chains and food webs elements in the food chain.

1 producers: make their own food.

2 consumers: they obtain the food by eating other living things.

2.1 primary: primary consumers eat producers.

2.2 Secondary: primary consumers eat producers.

2.3 Tertiary: tertiary consumers eat secondary consumers.

3 decomposers: decomposers decompose the remains of other living things.

Humans and ecosystems

Humans perform different activities that affect the environment.

Deforestation: consist in cutting down long areas of trees.

Contamination:

A)     Air contamination: is the use of fossil, fuels, petrol, coal …produce CO2. It incises the Earth’s temperature and causes the global warming.

B)     Water contamination It happens when waste from homes and indices It ben deposit in rivers, lakes …

C)     Sand contamination: Soil is polluted by chemicals from agriculture and waste from industries and homes.

Protection environment

People are trying to protect the enviroment.