I want to say B because they could have the same characteristics but their distance and luminosity could be very different. <span />
Answer:
As soon as you cut or scrape skin anywhere on your body, special blood cells called platelets spring into action. Platelets stick together like glue at the cut, forming a clot. This clot is like a protective bandage over your cut that keeps more blood and other fluids from flowing out.
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Answer:#2 ia chloroplasts #3 is no
Explanation:
1. Almost 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium.
2. The four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you.