Answer:
scientists got the space station up in space in to small pieces.
Explanation:
The main problem which was faced by the scientist was that there was no powerful rocket which has the ability to lift the whole space station due to its more weight and carry it to the space against the powerful force of gravity. So for solving this problem, space station is taken into pieces into the space and then these pieces should be join to build the space station.
 
        
             
        
        
        
Answer:
Cell replication occurs in the nucleus of the cell 
Explanation:
 
        
             
        
        
        
When a cat drops from a tree to the ground, the cat is transforming chemical energy attained from the food into kinetic energy. The later energy is used by the living species when they are performing locomotion.  
When a cat feeds on a mouse, the mouse will undergo through the process of digestion resulting in the formation of chemical energy. Thus, the food consumed by the cat will get transformed into chemical energy that can be utilized by the cat to perform its usual activities.  
 
        
                    
             
        
        
        
Think of a machine that can create the human race by saying like a piece of hair or someone can clone them hope this helped !
        
             
        
        
        
Answer:
c. lactic acid fermentation
Explanation:
If we did alcoholic fermentation, working out would make us feel drunk, not sore. This is only done by yeasts (a type of fungus) and bacteria. Glycolysis is simply an anaerobic process that occurs with fermentation and also regular aerobic respiration. It doesn't cause any soreness on its own. The Krebs cycle is the second major part to cellular respiration; it produces 6 NADH's, 2 FADH2's, 4 CO2's and 2 ATP; it's not involved in creating any soreness, as cell respiration does not create soreness. That leaves lactic acid fermentation, which we, bacteria, yeasts, and other organisms do. This is what we do when we run out of ample oxygen while doing some strenuous activity. Glycolysis is done with it. Glycolysis, however, relies on NAD+ to create ATP we need to maintain the same level of activity, lactic acid is produced as it accepts the 2 electrons and [H+] NAD+  should accept.