Approximately 96% of the Earth's water is salt water in the oceans and seas. Therefore, only 4% of the Earth's water is fresh water.Groundwater is an important source of freshwater storage because <span> It is the only viable source of freshwater in some areas.
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</span></span>b. It is the only viable source of freshwater in some areas.
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The path of movement of electrical impulse starts from the dendrites. Then it passes through cell body, axon, axon terminal and to the dendrites of another neuron through the synapse. Myelin sheath acts as insulator, Nodes of ranvier are small gaps in axons which facilitate the impulse transfer.
The answer to your question is B<span />
Cell
Tissue
Organ
Organ system
Organism
Brain, spinal cord, nerves
The brain controls thought, behavior, emotion, memory, and basic life functions. The brain is also the origin of control over body movement. The spinal cord connects the peripheral nervous system (PNS) to the brain; nerve impulses reaching the spinal cord through sensory neurons are transmitted up into the brain. Nerves primarily involve control and coordination of all parts of the body.
The nervous system interacts with every other organ system. For example the hypothalamus in the brain controls the pituitary gland and tells it when to produce hormones, this shows that the nervous system interacts with the endocrine system.
Hope this helps :)
<span>Lithosphere includes all the Earth known to us: the mountains, the ground we walk on, etc. It's solid - else we would not be able to walk on it! the more inner layers of Earth are liquid, but lithosphere, the outermost layer is solid. The tectonic plates are not floating on the lithosphere - they form the lithosphere! So the correct answer is A - it is solid and composed of crust and upper mantle (outer later)</span>
