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Your answer would be
C. Observation, hypothesis, experiment, and conclusion.
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The body system that directly provides for this demand is the circulatory system. When you exercise, the circulatory and muscle system cooperate, in order to meet the increased needs for strength and energy. The circulatory system involves the network which delivers blood to every part of your body. This flowing of blood ensures that the tissues are oxygenated and rich in necessary nutrients. During exercise, more blood flows to and from your muscles, in order to deliver the necessary amounts of oxygen to complete the aerobic respiration.
Answer:
This process is called genetic engineering.
The scientific method is the "process of experimentation" for your hypothesis. There are five steps in the scientific method they consist of: conduct research, form hypothesis, test hypothesis, record data, draw conclusion.
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Find the sunny spot, dig and loosen up the soil, mix the nutrients, plants the seeds , and finally water them well.
