Answer:
"rubbed together"
Explanation:
Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces.
 
        
             
        
        
        
Answer:
I think its 2 mass correct me if im wrong but I'm very sure
 
        
                    
             
        
        
        
The answer is Osmosis because its the only one that has anything to do with water
        
                    
             
        
        
        
Answer:
The correct answer is C.
Explanation:
The amount of genetic variation in two humans is 0.1 percent of their genome. Human genetic variation refers to the biological difference that exists in the human population.
The genetic variation in humans and apes genome is about 4 percent which is 35 million differences in a single nucleotide.
The genetic variation between apes and humans (Homo sapiens), according to scientists includes gene expression differences, variation in the transportable elements and type and number of repetitive genomic DNA transportable elements, the difference in the gene sequence, single nucleotide polymorphic, etc. 
According to research, 97 percent of humans and orangutans genomes are identical. Based on evolution, among all apes, the orangutans are very special as it has been stable for the past 15 million years.
Therefore, is the genetic variation between humans and orangutans is the greatest.
 
        
             
        
        
        
Answer: B
Explanation: During cell division, chromatin condenses to form chromosomes.