False! Every dinosaur was living for its own
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When exercising your muscles need more oxygen. Therefore your heart needs to pump more blood (which carries oxygen) to your muscles.
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OMG ive done this!!!!!!...
the instructions for the egg and sperm one are down there mine was not very good maybe yours will be a bit better loll
Photosynthesis and cellular respiration basically are dependent on one another. Photosynthesis produces a product of glucose, and oxygen as a byproduct. Cellular respiration uses both glucose and oxygen to produce carbon dioxide and water which are needed for photosynthesis to occur. Humans, animals and plants depend on the cycle of cellular respiration and photosynthesis for survival.
The digestive tract overlaps in many layers (It can even reach microsocpic overlaping) allowing it to fit inside a person's body.
