Answer:
The correct answer is - crystal form (external shape).
Explanation:
Physical properties are used for the identification of the minerals that include specific gravity, streak, texture, luster color, hardness, cleavage, and crystal form.
The most common physical property of the minerals in crystal form or external shape of the mineral. This is the property of the mineral that gives an idea about the homogenous possessing a 3-D internal order.
 
        
             
        
        
        
Answer:
400Joules 
Explanation:
the total work done to be calculated is Force× Distance 
:f×d=W
80×5=320J
 
        
             
        
        
        
Answer:
The correct answer would be bones.
X-rays are high energy electromagnetic waves which have an ability to penetrate most of the biological tissues. 
In the X-ray machine, a beam of high energy X-rays is passed through the filters and subject and then fall on the detector or photographic film to produce X-ray.
Dense tissues like bone, teeth, tumors et cetera blocks or stops most of the X-ray particles from reaching the detector or photographic film.
It forms glowing pictures on the X-ray film or photographic film.
The denser the material the brighter the image will be formed on the photographic film.
 
        
                    
             
        
        
        
Archaea I think this is the right choice
        
             
        
        
        
This organism belongs to the Plantae kingdom