THE EARTH HAS SIX MAJOR BIOMES

RAIN FORESTS

• Rain Forest biomes include temperate rain forests and tropical rain forests.

• Plants are EVERYWHERE in the rain forests.

• The bottom of the forest receives little sunlight.

• The rain forest gets a lot of rain. (That’s where it gets its name).

TROPICAL RAIN FORESTS

• There are many different species of organisms that live here.

• The diversity of plants supports many habitats.

DESERT

• A desert can receive less than 25 centimeters of rain a year.

• The organisms that live here need to adapt to the heat and lack of water.

• Most organisms are active at night, when it is cooler.

GRASSLANDS

• Most grasslands receive about 25-75 centimeters of rain each year.

• There isn’t enough rain for trees to grow.

• Many large herbivores live here including elephants, bison, antelopes, zebras, rhinoceros, giraffes, and kangaroos.

DECIDUOUS FOREST

• This biome receives at least 50 centimeters of rain a year.

• During winter, there isn’t a lot of life.

• The growing season for plants is 5-6 months.

BOREAL FOREST

• Coniferous trees have waxy needles that retain water from going out.

• Many organisms eat the seeds from the trees.

TUNDRA

• Most plants are grown low to the ground.

• The soil in the tundra is permanently frozen, this is called permafrost.

• In summer insects inhabit the area along with the insect-eating birds.

• In winter birds migrate south.

THERE ARE TWO TYPES OF WATER-BASED ECOSYSTEMS

ALL AQUATIC ECOSYSTEMS ARE AFFECTED BY THE SAME ABIOTIC FACTORS SUNLIGHT, TEMPERATURE, OXYGEN, AND SALT CONTENT.

FRESH WATER

• A small fraction of Earth’s surface is covered with freshwater.

• Freshwater consists of streams, rivers, ponds, and lakes.

STREAMS AND RIVERS

• Organisms adapt to the strong current.

• Small organisms may have hooks or suckers.

• Fish can have streamlined bodies. (Skinny bodies).

PONDS AND LAKES

• Lakes are generally deeper and larger than ponds.

• Sunlight can often reach the bottom of a pond.

• Scavengers stay toward the bottom to consume dead organisms.

MARINE ECOSYSTEMS

• Intertidal zone, neritic zone, and the open ocean are different parts in the marine ecosystem.

INTERTIDAL ZONE

• The organisms that live here, need to be strong enough to survive high and low tide, temperature change, and pounding waves.

NERITIC ZONE

• Sunlight allows photosynthesis near the surface.

THE OPEN OCEAN

• Light only penetrates to a depth of a few hundred meters.

• Tuna, swordfish, and whales depend on algae for food.

THANK YOU FOR WATCHING!

POWER POINT DONE BY RACHEL HOLDEN