Precipitation of water on the land surface in the hydrologic cycle leads directly to evaporation, filtration and run off
When water is release from clouds in the form of rain, sleet, hail, freezing rain, or snow precipitation happens. It is the main connection in the water cycle that gives for the transfer of atmospheric water to the Earth. 
        
                    
             
        
        
        
Answer:
1.5 billion years ago
Explanation:
Protists are a collection formed up of protozoa, unicellular algae, and fungus forms. We will focus on the being part of this society: the protozoa (proto = first, zoa = beings). Protozoa are the earliest discovered collection of heterotrophic living that utilize and modify complicated meal particles into power. Although protozoans are only made up of a single cell, these organisms control to perform all the necessary responsibilities of life.  The protozoa are split into four principal associations: the ciliates, the flagellates, the heliozoans, and the amoebas.
 
        
                    
             
        
        
        
Answer:
C
Explanation:
A system is at equilibrium when the rates of opposing reactions are equal.
Answer A does not show the rate of reactions, it only shows concentrations of reactants.
Answer B only shows constants, it does not show rates of reactions.
 
        
             
        
        
        
Answer:
Answer is explained below.
Explanation:
A. The  observed  single  stranded  regions  are  found  in  the  mRNA.
B. The  loops  represent  introns  (Non-coding  portions  of  the  mRNAin primary  transcript ).  The  intron  sequences  are  removed  to  form  a mature mRNA  by  splicing.
C. If  the  scientist  use  RNA  and  DNA  from  bacteria,  loops  cannot be seen. Because introns are produced in only eukaryotes but not in prokaryotes.