When you step out into the cold, your body shivers in order to keep its temperature at 98.6 degrees.

• all living things need and use energy

• all living things maintain internal balance (homeostasis)

• all living things are made of cells

• all living things grow and develop

Green plants produce their own food through the process of photosynthesis.

• all living things need and use energy

• all living things maintain internal balance (homeostasis)

• all living things are made of cells

• all living things grow and develop

A baby song bird hatches from its egg with both parent songbirds watching.

• all living need and use energy

• all living things are made of cells

• all living things maintain internal balance(homeostasis)

• all living things reproduce

A pill bug (roly poly) eats a carrot.

• all living things are made of cells

• all living things maintain internal balance(homeostasis)

• all living things need and use energy

• all living things grow and develop

A camel has eyelashes that work to keep the dust and sand out of its eyes.

• all living things are made of cells

• all living things adapt to their environment

• all living things grow and develop

• all living things need and use energy

A caterpillar hibernates in a cocoon and emerges as a butterfly.

• all living things grow and develop

• all living things adapt to their environment

• all living things need and use energy

• all living things respond to stimuli

An amoeba is a unicellular organism. What characteristic of life is this?

• all living things need and use energy

• all living things respond to their environment

• all living things are made of cells

• all living things can grow and develop

A tulip opens in the morning at sunrise and closes in the evening at sunset.

• all living things need and use energy

• all living things respond to stimuli

• all living things grow and develop

• all living things are made of cells

Over three years, Tim's height has increased from 5'4" to 5'11".

• all living things are made of cells

• all living things maintain internal balance (homeostasis

• all living things need and use energy

• all living things grow and develop

A sea worm drops its tail and the tail becomes a new worm.

• all living things are made of cells

• all living things have DNA

• all living things grow and develop

• all living things reproduce