It is a system of chronological dating that relates geological strata to time.
Answer:
It is the process where by plants manufacture their own food by using raw material such as carbon (iv) oxide, water and sunlight.
Photosynthesis is the process by which plants take in sun light and carbon dioxide and produce glucose while respiration is when humans take in oxygen and glucose and produce carbon dioxide
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Red blood cells carry oxygen from our lungs to the rest of our bodies. It carries a special protein called haemoglobin, which helps carry oxygen from the lungs to the rest of the body, it has no nucleus and can easily change shape
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In adults, stem cells remain undifferentiated until they are needed to repair or replace other cells. Stem cells can produce cells that are identical to themselves.
