Answer: C. They transport oxygen throughout the body.
It is the primary function of red blood cells.
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The answer is B. CO2 + H2O + Sunlight ----> Glucose + O2
Answer:
In most trees, the area just under the bark layer contains moisture in the form of sap and water. And since water is a better electrical conductor than wood, lightning striking a tree tends to travel just underneath the bark.
Yes they do have a cell wall