<span>The memory test that would most effectively reveal that mr. marchman, at age 65, still remembers many of his high school classmates, is RECOGNITION test.  </span>Recognition memory <span>is the ability to recognize previously encountered events, objects, or people.</span>
        
             
        
        
        
Answer:
An understanding of biology can help you make choices and decisions that affect your health. Biologists and other scientists research environmental issues such as pollution, biodiversity,land conservation, and natural resource use. 
Explanation:
Hope this helped Mark BRAINLIEST!!!
 
        
             
        
        
        
Answer:
Adaptive immune defense system consists of lymphocytes like B-lymphocytes and T- lymphocytes. B-lymphocytes provides humoral immunity while T- lymphocytes provide cell-mediated immunity to the body.
99% of lymphocytes circulate freely in the blood and lymph. B lymphocytes differentiate into plasma B cells and B memory cells when interact with antigen presented by T helper cells.  
Then plasma cells secrete antibodies in the circulation which binds to extracellular antigens through antigen-binding site. Then the bounded antigen is recognized by receptors present on phagocytic cells. This receptor binds the Fc region of antigen bounded antibody and destroy the antigen by phagocytosis.
 
        
             
        
        
        
Answer:
A device to measure the dimensions of a object
Explanation:
 
        
             
        
        
        
Answer:
According to the diagram, cell growth and preparation occur in steps 2 and 4, corresponding to phases G₁ and G₂ of cell cycle.
Explanation:
G₁ phase consists of the beginning of the cell cycle, following the process of previous division, and occurs in a cell that prepares for a next division. In this phase growth depends on the proliferation of mRNA to increase protein synthesis.
G₂ phase —third phase of the cycle— is the continuation of the process of cell growth induced by protein synthesis. Changes occur at the level of cellular components, as preparation of the cell prior to division.