The Escherichia coli that live in your intestine and help break down food are an example of which type of interaction?
The nonliving parts of an ecosystem are called
To carry out photosynthesis, algae and plants use the abiotic factors, sunlight, carbon dioxide, and
The first organism in a food chain is always a
What do producers release as a result of photosynthesis?
The very slow movement of the continents is called
What substance in the mouth contains an enzyme that begins chemical digestion?
What substance coats and protects the inside of the stomach?
The process in which your body breaks down food into small nutrient molecules is called
Which nutrient is needed in order for all body processes to take place?
Atherosclerosis is a condition in which
Hypertension is a condition in which
The function of white blood cells is to
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