The answer c) A- Cell membrane because it selects what molecules enter/exit the cell
The Law of Definite Proportions/Proust's Law
sliding friction because your canoe is sliding across the sand
<span>Ground water depletion is one of the major problems. The best solution is to conserve water that we are having currently and to recycle those wasted water. water conservation can be done in many ways such as reduce the level of pumping the ground water, avoiding the use of chemicals, use of natural fertilizers, rain water saving, pumping water to the tanks from stored rain water in the ground, way of handling the water consuming jobs.</span>
