Answer:
We only know it's there because we can see the effect of its gravity. Scientists study dark matter by looking at the effects it has on visible objects. Scientists believe that dark matter may account for the unexplained motions of stars within galaxies. Computers play an important role in the search for dark matter information.
Explanation:
Hope That helps!
 
        
             
        
        
        
Answer:
a help break down complex molecule 
 
        
             
        
        
        
Answer:
It increases haemoglobin's affinity.
Explanation:
When CO binds to one heme molecule, the haemoglobin molecule becomes in a relaxed state and oxygen can bind so very easily. 
The problem is not in the uptake of oxygen, it's with its delivery. The affinity for oxygen increases so much such that it becomes impossible to release and deliver the oxygen to tissues. 
 
        
             
        
        
        
Answer:
muchos factores pueden contribuir a la variación de la población animal, incluidas las enfermedades, el suministro de alimentos, la sequía y la predicción natural. la sequía puede ser un factor de control importante y la mortalidad inducida por la sequía ocurrió en 1993 causando aproximadamente un 40% de mortalidad en la población de búfalos.
Explanation:
Espero que esto ayude a marcar el MÁS CEREBRAL !!!