Answer:
Filtration
Explanation:
look at the image closely that's the first step in treating water from a river or lake.
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Answer:
D.) Oxygen-poor
Explanation:
The pulmonary veins are the vessels that carry the oxygen-rich blood to the left atrium
Answer:
Similarly, your muscles and other parts of your body need to have a continuous supply of glucose (or other high-energy molecules) and oxygen to provide the energy for muscle contraction and other body functions. When your body breaks down glucose, carbon dioxide is produced.
You should ask for details about what happened to them