Answer:
Recently scientists have discovered an enzyme, BACE2, that decreases these abnormal protein fragments in the brain of a person with Alzheimer’s disease. 
Explanation:
 
        
             
        
        
        
Each person’s DNA is unique.Scientists use variable regions in DNA to create  DNA profile.<span>DNA samples can be taken from blood, bone, hair, or other body tissues and
products.</span>DNA from a crime scene can be compared to DNA from a suspect.DNA typing can be used to solve old cases.  this is what you need to write.
 
        
        
        
Answer:
It chloroplast
Explanation:
contains chlorophyll which traps energy from the sun.
 
        
             
        
        
        
Answer:
This is allopatric speciation. The organisms were separated from each other by the containers. The separation caused them to evolve to the point that they were more likely to mate with each other than with a member of another tank.
Explanation: