Unit 1 - Lessons 1-4

An _________________ is all the living and non-living things that interact in an area.

• ecosystem

• population

• organism

• community

Air, soil, water, and sunlight are some _________ things in an ecosystem.

• living

• non-living

Organisms that live in an ecosystem must meet their needs there, or they will not survive.

• True

• False

Many organisms that live in an ecosystem could not survive in another ecosystem.

• True

• False

Tropical rainforests are wet, warm ecosystems with ____ layers.

• 2

• 3

• 4

• 5

The first layer of a tropical forest is known as the __________.

• emergent layer

• understory

• canopy

• forest floor

Many different species of organisms live in rainforests, and each layer also houses different types of living things.

• True

• False

Beetles, snakes, lizards, monkeys, and parrots are examples of _____________ in the rainforests.

• mammals

• insects

• reptiles

• organisms

Many organisms live in ponds and interact with each other to meet their _______.

• friends

• needs

• interests

• wants

Duckweed, water lilies, frogs, fish, turtles, and herons are some _________ organisms.

• desert

• forest

• pond

• tundra