Answer:
the null hypothesis and the alternative hypothesis.
Explanation:
null contains a statement of equality (greather than or equal to, less than or equal to, equal to) and the alternative is the complement of the null hypothesis statement that must be true if H0 is false and it contains a statement of strict inequality (greater than, less than, not equal to)
 
        
             
        
        
        
Answer:
Throwing them away.
Explanation:
You don't throw sardines, you eat them!
 
        
                    
             
        
        
        
All the spheres on earth overlap with each other so that any changes occur in one sphere may affect the other.
<u>EXPLANATION: </u>
The four spheres of earth are Land (the lithosphere), water (hydrosphere), air (atmosphere), living things (biosphere). The living organisms receive sunlight, heat, and gases from the atmosphere and water from the hydrosphere.
All these spheres are interlinked with one other and assembles in a single location at the time of overlapping. Life would not be there on earth if all these spheres do not interact or overlap with each other.
Examples of the earth overlapping is given below;
- Birds the living organism that flies in the air.
- Water flows through the soil on land. 
- Evaporation of water into the atmosphere causes rain on the land.
 
        
             
        
        
        
Answer:
Large intestine
Explanation:
After the completion of digestion process in the small intestine, the indigestible residual materials are passed to the large intestine. 
The large intestine serves three primary functions -
- Absorption of water and electrolytes
- Production and absorption of vitamins
- Formation and propelling of feces accomplishing their removal through the rectum.
When water gets absorbed, the indigestible materials get dehydrated and during feces formation they are compacted and then eliminated through the rectum.
 
        
             
        
        
        
Answer:
1: 7.8 cm
2: .7 cm
3: 5.55 cm
For the other questions, you have to use a ruler yourself and measure using cm. :) 
1 cm = 10 millimeter. To convert, just add a 0 to the end of cm to find the mm (or move the decimal one place to the right.) 
For example, 2.6 cm = 26 mm / 5 cm = 50 mm. Hope this helps!