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Natural science is concerned with the description, prediction, and understanding of natural phenomena based on empirical evidence from observation and experimentation. It can be divided into two main branches: life science (or biological science) and physical science.
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a single closed path of electrical components including a voltage source
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D: Increase the distance between the objects.
E: Decrease the mass of one of the objects.
" The endocrine system is the collection of glands that produce hormones that regulate metabilism, growth and developement, tissue function.." and others.