Answer:
A
Explanation:
I think an untreated water can carry disease causing organisms and make people sick
Answer:
In a comparison of birds and mammals, the condition of having four limbs is a shared ancestral character
The answer is letter A.
<span>Organelles and other cellular material are held within a cell by a cellular membrane. These membranes are what consist of a cell's exterior.
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Answer:
They are veins and arteries. The primary function of arteries is to transport highly oxygenated, nutrient-rich blood from our hearts and distribute it to the rest of our body. Veins, on the other hand, are used to pump much-needed blood back to the heart.
