“Diffusion sees molecules in an area of high concentration move to areas with a lower concentration, while osmosis refers to the process by which water, or other solvents, moves through a semipermeable membrane, leaving other bits of matter in its wake.” 
Reference: sciencing.com
Hope this helps! :)
        
             
        
        
        
<span>In the liver, bile salts
are formed. <span>Because
of their low surface tension, this contributes to the emulsification of fats found
in the intestine and their absorption from the GI tract. These are bile’s
components. It is because of the bile salts which give bile the ability to
emulsify, mix, lipid in the aqueous environment in the intestine. Bile is the
one responsible for the efficient digestion of lipids. Bile is secreted in the
gallbladder down to the small intestine. It then breaks dietary fats into
smaller particles called emulsification in the small intestine. The bile’s
function is in the completeness of the digestion and absorption of fat.  </span></span>
 
        
             
        
        
        
The answer is (D). Creating more fossil fuels.
Fossil fuels are formed by the compression of the dead matter of plants and animals within the crust of the Earth. The plants and animals that died due to some calamity millions of years ago got covered by the rocks and soil. The internal heat of the Earth and the pressure due to the weight of the rocks turned them into thick dark crude oil. This process is natural and time consuming. It is impossible to recreate this process by artificial means on a large scale to make more solid fuels.
Interestingly, mining of extra-terrestrial planets, moons and asteroids is an ongoing research and the means to do it are being prototypes in the research laboratories of NASA and other space organisations. 
 
        
             
        
        
        
It would be scarce during a drought because in order for precipitation to take place evaporation must first occur. If there is to water to be evaporated then precipitation won’t take place