It would help you know how they all work together like how the musicular system helps the digestive system during digestion 
        
             
        
        
        
Answer:
A buffer is simply a mixture of a weak acid and its conjugate base or a weak base and its conjugate acid. Buffers work by reacting with any added acid or base to control the pH.
Explanation:
 
        
             
        
        
        
Explanation:
Cave lions, sabre-toothed cats, cave bears, giant deer, woolly rhinoceroses, and woolly mammoths were prevailing species of the Quaternary period. Without the dinosaurs, plant life had an opportunity to flourish during the Cenozoic era.
 
        
             
        
        
        
Answer:
 Cos(89)
Explanation:
Trust me Im right. I got this answer by calculating what decimal sin(1) is then saw which answer choice equals the same answer
 
        
             
        
        
        
Answer:
Abnormal BRCA1 and BRCA2 genes are found in 5% to 10% of all breast cancer cases in the United States. A study found that women with an abnormal BRCA1 gene had a worse prognosis than women with an abnormal BRCA2 gene 5 years after diagnosis.
Explanation: