D) All of above
<em>Hope this helps!</em>
 
        
                    
             
        
        
        
the leaves. 
there is more surface area = more sunlight for chloroplasts 
 
        
             
        
        
        
Answer:
E
Explanation:
thanks again for your help and support you in whatever way you can get a good night's sleep and I will talk to you later I
 
        
             
        
        
        
The answer is 3468 kcals. Protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram. 
Carbohydrate = 240 gms x 4 = 960 cal Protein = 132 x 4 = 528 cal Fat = 220 x 9 = 1980 cal
Total : 960+528+1980 = 3468 calories
 
        
                    
             
        
        
        
Answer:A. The release of calcium ions causes myosin and actin to attach to each other.
The contraction of skeletal muscles takes place by induction of a nerve impulse, which produces a movement and the interaction of the filaments containing proteins named as actin and myosin. This interaction of filaments is regulated by proteins  called tropomyosin and troponin present on the actin filaments. The motor nerve causes the depolarization of the muscle membrane sarcolemma. This triggers the sarcoplasmic reticulum to release calcium ions. This calcium binds to troponin and thus allows the tropomyosine strand on the actin filament to displace so that the part of the actin where myosine head needs to be attached remain uncovered. Binding of the actin myosine filament results in contraction. 
Hence, the release of calcium ions causes myosin and actin to attach to each other causes muscle contraction.