<span>Plato first proposed that the planets followed perfect circular orbits around the Earth. Later, Heraclides (330 B.C.) developed the first Solar System model, placing the planets in order from the Earth it was is now called the geocentric solar system model.
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Carbohydrates do not have a carbon nitrogen-bond because nitrogen is not found in this protein. So the answer is C) carbohydrate. I hope this helps.
Answer:
What is your chosen ecosystem?
Explanation:
Answer:
Technological advances increase energy efficiency because these improvements lower the amount of energy a product uses while performing at the same level. ... By doing this, not as much energy needs to be expended in order to use heating and cooling systems. Heating and cooling the housing efficiently is also important.
