They drill holes and bring up samples of rock and study how seismic wave move through the earth.
        
             
        
        
        
Answer:
c . milk
Explanation:
Colloid are those whose particles are larger than the size of molecule.The size of particle is one nano meter.Collide particle range is between 1 to 1,000 nano meter. Every collide particle is consist of two parts colloidal particle and dispersion medium.
Milk is one of them.Collide are made form solid liquid and gas.
milk is the example of liquid collide.
 
        
             
        
        
        
Plants look green because they absorb all light except the green one.
you can prove it as when you give plant green light only ....it will not produce...or produce a very little.....so the answer
        
                    
             
        
        
        
The answer would be C: The gulf sturgeon population will decline due to loss of habitat
        
             
        
        
        
Answer: Humans killing a majority of the natural predators will cause a drastic increase of the prey populations and make food,shelter and other resources scarce.