Characteristics of Life

A plant growing towards the light is an example of 

• reproduction.
• responding to a stimuli.
• metabolism.
• homeostasis.

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A maggot changing into a fly is an example of 

• reproduction.
• growth and development.
• homeostasis.
• evolution.

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The maintenance of an organism’s internal environment is called:

• compensating
• homeostasis
• balancing
• routine

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The "cause" for something to happen is the

• response
• effect
• stimulus
• homeostasis

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What is an adaptation?

• A feature or behavior that helps an animal survive.
• The food that an animal eats.
• How energy moves in a food web.
• How animals evolve throughout time.

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

• All living things use energy
• All living things contain cells
• All living things maintain homeostasis
• All living things grow

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

• All living things use energy
• All living things contain cells
• All living things respond to their environment
• All living things grow

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Rocks are not living because

• they never move
• they aren't needed for humans
• they are not made of cells
• they don't break down

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A cactus shows all of the following characteristics EXCEPT ____________. 

• need water
• growth 
• movement
• respond to environment 

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What is the main source of energy on Earth?

• stars
• moon
• water
• sun

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