3º NS U4 We preserve ecosystems.

UNIT 4: We preserve ecosystems

start

INDEX

Game 1

Ecosystems

PROJECT TIME

Game 2

Types of ecosystems

Game 3

Obtain food

Relationships in ecosystems

PROJECT TIME

In groups in class we are going to study and investigate the pond that is in the school. We are going to see how is the ecosystem form in the pond.

Ecosystems

Ecosystems

Abiotic or non-living things

Biotic or living things

Water

Soil

Animals

Plants

Air

Light

Micro organisms

Fungi

GAME 1

Terrestrial ecosystems

Forests= bosques

Grasslands= praderas

Deserts= desiertos

Polar regions= zonas polares

Aquatic ecosystems

Salt water= agua salada

Fresh water= agua dulce

Coral reefs= arrecifes de coral

rivers = rios

lakes, ponds... = lagos, charcas...

Whales= ballenas

GAME 2

OBTAIN FOOD

OBTAIN FOOD

CONSUMERS

PRODUCERS

They feed on other living things. They eat plants, animals...

They make their own food like plants or algae.

Primary consumer

Secondary consumer Tertiary consumer

OBTAIN FOOD

RELATIONSHIPS WITHIN THE SAME SPECIES

SOCIETIES

FAMILY GROUPS

ASSOCIATIONS

RELATIONSHIPS BETWEEN DIFFERENT SPECIES

RELATIONSHIPS BETWEEN DIFFERENT SPECIES

Commensalism

MUTUALISM

One species benefits and the other is not affected.

It benefits two different species.

RELATIONSHIPS BETWEEN DIFFERENT SPECIES

Competition

Parasitism

It benefits one species and harms the other species.

It happens when two or more living thing compete for the same resources.

GAME 3