Environments & Organisms

An ​ (a)   is made up of all the living and nonliving things in a particular area.

• ecosystem
• plants
• population

The ​ (a)   and communities in a given area interact with one another, as well as with their nonliving environment.

• populations
• frogs
• biome

All living things need air, (a)   , water, and space.

• food
• sunshine
• love

Without these items, living things would most likely ​ (a)   .

• die
• multiply
• disappear

Both are living things - nevertheless, a deer is bigger and needs ​ (a)   air, food, water, and space than a mouse.

• more
• less
• equal

Changes to the environment can sometimes be helpful, but they can also be harmful to the ​ (a)   and ​ (b)   .

• plants
• animals
• rocks
• water
• insects
• birds

Changes to a location may make it more difficult for an organism to find ​ (a)   .

• food
• animals
• friends

If the organism, or living things, does not meet its needs, the animal may have to leave and ​ (a)   to another area.

• relocate
• skip
• perish

If it cannot adapt to the new conditions or move to a new place, the organism will probably ​ (a)   .

• die
• survive
• make friends

When changes to an ecosystem take place slowly, plants and animals have ​ ​ (a)   to adjust to these changes.

• time
• space
• speed