The lizard on the rock is attempting to stay warm and regulate its body temperature. This is an example of _______________ : an animal is maintaining a stable internal state in the body.
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heat
homeostasis
Homo sapiens
homeostasis
The central nervous system is composed of the ___________ and __________ .
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1 point
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Brain and spinal cord
Heart and lungs
Lungs and kidney
Brain and spinal cord
You have two kidneys that filter your blood and remove harmful waste. To which body system do the kidneys belong
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1 point
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nervous
cardiovascular
excretory
excretory
In the _________________, food is mixed with acid and enzymes break the food down into nutrients.
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1 point
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stomach
esophagus
large intestine
stomach
Which option shows the correct order of organization within multicellular organisms (from least complex to most complex)?
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1 point
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cell → organ → organ system → tissue → organism
cell → tissue → organ → organ system → organism
organ → organ system → cell → organism → tissue