The major organ of the circulatory system that causes blood to flow through the body by its pumping action is the heart.
Answer:
Nucleus because it contains the dna and controls the activities of the cell.
Systematic observation, measurements and experiment and the formulation .testing.and modification of hypothesis
I believe lactic acid fermentation is used for all three!
Answer: The energy flow takes place via food chain and food web. During the process of energy flow in the ecosystem, plants being the producers absorb sunlight with the help of the chloroplasts and a part of it is transformed into chemical energy n in the process of photosynthesis.
Explanation:
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