the answer is B hope this helps
Answer:
C
Explanation:
the first 2 choices aren't even systems at all, and D is specifically talking about the water and not mentioning animals/plants at all.
hope this helps!
An electronic pulse oximeter, which can be clipped on the bridge of the nose, forehead, on the earlobe, or to the tip of finger, determines the oxygen concentration in arterial blood. Hemoglobin is the protein complex in blood that is responsible for carrying oxygen around the body. The pulse oximeter actually measures the concentration of hemoglobin in the blood and determines oxygen concentration from this value.
The body does not require any added sugar to stay healthy. Hunters/gatherers and our ancestors consumed fruits and milk that are natural sugar to obtain energy.
<h3>What is the difference between added sugar and natural sugar?</h3>
- Natural sugars are found in unprocessed food such as fruits and milk.
- Fruits contain fructose and milk contains lactose.
- On the other hand, added sugars are the artificial sweeteners that we often add to our daily diet in the form of white sugars and caloric sweeteners.
- From the perspective of health, it is always better to opt for natural sugar that keeps our body stable energy and stable metabolism.
- Added sugars are harmful when consumed in higher quantities.
Hence, added sugar is not necessary for our health when we have learned that aerobic cellular respiration uses glucose as a fuel source that can be obtained from natural sugar.
To learn more about natural sugars refer:
brainly.com/question/1723985
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Seedless plants do not grow from the ground as seed ones do or the other way around
