This is the primary federal law in the United States governing water pollution. Passed in 1972 the act established the goals of eliminating releases of high amounts of toxic substances into water, eliminating additional water pollution by 1985, and that surface waters would meet standards necessary for human sports and recreation by 1983.
Answer:
c the comet turns into a shooting star and is gone forever
A neuron is nerve cells that transfer information within the body, chemically over short distances, using electrical signals over long ones.
As it turns out, most resting neurons are permeable to Na+ and CL- as well as K+. K+ will try to drag the membrane potential toward its (positive) equilibrium potential, while NA+ try to drag the membrane potential to its negative equilibrium potential.
The real membrane potential will be between NA+ and K+ of equilibrium potential<span>. However, it will be closer to the equilibrium potential of the ion type with higher permeability.</span>
Gravitational push<span>, like a gigantic landslide away from the </span>ridge<span> crest toward the subduction zone (the lithosphere slides on the asthensosphere) </span>Slab pull<span>: results when the lithospheric plate moves farther from the </span>ridge<span> and cools, gradually becoming denser than the asthenosphere beneath it
Hope this helps. :)</span>
2. White Dwarf Stage
The sun will run out of nuclear fuel and slowly cool down over many billions of years.
