Radon gas is a radioactive product of the decay of naturally occurring uranium<span> in the Earth's crust. Groundwater entering a house through a home water-supply system might release radon indoors where it could be breathed.</span><span>
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<span>the matter that has a definite composition throughout.....
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Answer:
you meant what are the main sources
they are: fossil
clean energy
energy storage
hydrogen& fuel
electric power
Answer:
Option (D).
Explanation:
Skeletal muscles is one of the most important types of muscle that regulate the contraction of skeletal muscles of the body. The skeletal muscle is controlled by the somatic nervous system.
Skeletal muscles are multi nucleate contains large number of nucleus in their structure. The multiple nucleus increases the ability of muscle to produce large number of enzymes. These enzymes are proteins are important for the muscle contraction.
Thus, the correct answer is option (D).
<span>The term applied when water passes through a selectively permeable membrane from an area of high to low concentration is called osmosis. Osmotic pressure is defined as the amount of external pressure that is required to stop the net movement of the solution across the semi permeable membrane. In terms of biology, osmosis has great importance as most of the membranes in our body are semi permeable. Permeability depends on several factors such as charge, solubility, solute size and chemistry. Osmosis is the process that provides the primary means through which water travels in and out of the cells.
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