I think the correct answer from the choices listed above is option D. Simple diffusion is the cell transport that allows small molecules to move from an area of higher concentration to an area of lower concentration without energy being <span>required from the cell.</span>
Law of conservation of mass states that overall mass can neither be created nor destroyed. It means, that mass in left hand side & right hand side of the reaction would always remains constant
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Motor neurons conduct nerve impulses from the central nervous system (brain and spinal cord) to an effector. A single motor neuron carries messages from the spinal cord to an effector. One or more interneurons in the spinal cord carry messages from a sensory neuron to a motor neuron.
it is a stationary front because the stationary fron does not move from one place.