Primary succession occurs when vegetation occurs in a place for the very first time, i.e there was no vegetation there before. 
The causes are:
-Erosion
-Physiography
-Elevation
        
             
        
        
        
Answer:
The difference in specific heat capacity between land and water
Explanation:
(A P E X)
 
        
             
        
        
        
Answer is : C, increase the surface to allow more space for ATP synthesis.
As it produces large amounts of ATP through oxidative metabolism of pyruvates, which are produced by glycolysis.
The main job of mitochondria is to perform cellular respiration.  This means it takes in nutrients from the cell, breaks it down, and turns it into energy.  This energy is then in turn used by the cell to carry out various functions.
Each cell contains a different number of mitochondria The number present is dependent upon how much energy the cell requires.  The more energy a cell needs the more mitochondria that will be present. Cells have the ability to produce more mitochondria as needed.  They also can combine mitochondria to make larger ones.
The most prominent roles of mitochondria are to produce the energy currency of the cell, ATP (i.e., phosphorylation of ADP),  through respiration, and to regulate cellular metabolism.The central set of reactions involved in ATP production are collectively known  as the citric acid cycle, or the Krebs cycle. However, the mitochondrion has many other functions in addition to the production of ATP.
 
        
                    
             
        
        
        
Answer:
The correct answer would be - 1. group 2.period 3. less 4. more
Explanation:
elements that have a place with same group contains same number of valence electrons. Thus, they will in general show comparable chemiccal properties.  
At the point when we move over a period at that point number of electrons get added to a similar shell. Therefore, there will be no expansion in size of elements.  
Additionally, metals are the elements that have a place with group 1, 2 and d-block group are otherwise called metals. Metallic character of elements diminishes when we move left to directly in a periodic table.  
As most responsive metals are put on the left half of occasional table.  
Since, size of elements increases on descending the groups. Along these lines, a elements can lose its valence electrons due to the less forrce of ttaraction between valence electrons and its neucleus. 
 
        
             
        
        
        
Answer:
i cant see the picture can you type in comments what your asking