The answer is B. Hydrogen Bonds
        
             
        
        
        
As you grow older, you would need to remain physically active to keep a good level of physical fitness.
Answer: T
        
             
        
        
        
Answer:Major functions of connective tissue include: 1) binding and supporting, 2) protecting, 3) insulating, 4) storing reserve fuel, and 5) transporting substances within the body. Connective tissues can have various levels of vascularity. Cartilage is avascular, while dense connective tissue is poorly vascularized.
Explanation:
 
        
             
        
        
        
Preventing wind erosion in a dry, sandy area is feasible through any of the following land-use practices:
a. Tillage - creates soil roughness by making furrows and ridges that are perpendicular to the direction of the wind. 
b. Crop rotation - rotations of legumes followed by shrubs followed by trees then back to legumes work best.
c. Intercropping - is the most widely used particularly in countries with desert areas. One of the most popularly used is oasis agriculture that makes use of about 3 layers of vegetation. 
        
             
        
        
        
Answer: D.
The  E. reticulum and Golgi bodies are concerned with secretion and synthesis of molecular substances e.g protein , lipids and steroid. Therefore these cellular organelles should contain   Plasma B cells  and  Islets of Langerhans.  for protein  hormone synthesis(insulin) and antibodies production
Explanation: