Ecosystems

Unit 1

Biome: a large area where plants an d animals live together.

Tundra: cool summers and very cold winters.Scarce precipitation. You can see

lichen, moss, migratory birds and Arctic foxes.

Mediterranean: hot summers and cool winters. Moderate precipitaction. You can

see shrubs, aromatic herbs, wild goats, rodents and lizards.

Tropical rainforest: warm temperatures all year. A lot of precipitation. You can

see orchids, ferns , anteaters, jaguars and butterflies.

Grasslands: Temperature extreme. Scarce precipitation. You can seelarge areas of

grasses, crops, antelopes, sheep and cattle.

Temperate deciduous forest: hot summers and cold winters. It rains all

year round. You can see deer, squirrels, foxes.

Desert: warm and hot daytime temperatures all year. Hardly precipitation. You can

see cacti, small bushes, lizards, snakes and scorpions.

Coniferous forest: cool summers and cold winters. Moderate precipitation. You

can see evergreen coniferous trees, bears, wolves and beavers.

T Y

P E

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Ecosystems: interaction between all the living and non-living things in an area.

ECOSYSTEM

Living things

Flora: All plants live in

it.

Fauna: All the animal live in it.

Fungi and microorganisms

Environment

All the physical elements in the area where the living things are: air, water, soil, sunlight,

temperature and climate

A POPULATION: is the organisms in area that belong to the same species. A COMMUNITY: populations interact with each other.

Sun light producer Primary consumer

Secondary consumer

Tertiary consumer decomposer

FOOD CHAIN

Food web.- Many different food chains are connected in the same ecosystem.

type cause effectair Burning oil and coal Global warming,

acids rain, links in food chain disappear, respiratory problems in human

soil Chemicals from agriculture.Waste from industries and homes.

The contamination passes into plants, poor soil for cultivation, affects the food web,

water Waste deposited in rivers, lakes, seas. Acid rain.

Aquatic living things die, food chain affected.

Pollution is the contamination of the Earth’s air, soil and water