Yoyr muscles will switch to anaerobic respiration and produce lactic acid
Direct observation is an observation you make first hand. It is something you see with your own eyes and observe yourself.
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I’m pretty sure it’s A, C, and F
Answer:
The cell (from Latin cella, meaning "small room") is the basic structural, functional, and biological unit of all known organisms. A cell is the smallest unit of life. Cells are often called the "building blocks of life".