Explanation:
Physics The state of a body or physical system that is at rest or in constant and unchanging motion. The sum of all forces acting on a body that is in equilibrium is zero (because opposing forces balance each other).
 
        
             
        
        
        
Answer:   B. Into the cell
Explanation: If a cell is put into a hypertonic solution, water will leave the cell. When a cell is put into a hypotonic solution, water will enter the cell. And a cell in an isotonic solution water moves into and out of cell at the same time.
 
        
             
        
        
        
Answer:
Their skeletal structure and possibly how they look but usually not. You can also look at the way they live and the biomes they live in.
Explanation:
 
        
             
        
        
        
Drosophila melanogaster an excellent model for studying fundamentals of development because many of the genes involved in the development of the fruit fly are also found in humans and  the precise formation of each of their 959 body cells has been mapped.
Its many of the genes involved in the development of the fruit fly are also found in humans. Drosophila melanogasteris which is also called Fruit fly is small in size and minimal requirements, many fly's can be raised and tested within a small laboratory which does not have access time, space or funding.
Genetic factors also make this fly an ideal model organism. Drosophila melanogasteris only has four pairs of chromosomes compared to 23 pairs in humans.
To learn more about Drosophila melanogaster here
brainly.com/question/18763357
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