Answer:
1. Chloroplast
2. cellular respiration
3. ATP
4. C6H1206(s) + 02(g) -- CO2(g) + 6H20(I) + energy
Explanation:
This question is describing the processes of photosynthesis and cellular respiration. Photosynthesis occurs in the CHLOROPLAST, which is responsible for the conversion of solar energy (from sun) into chemical energy (in glucose). The general photosynthetic reaction is:
6CO2(g) + 6H2O(l) + energy → C6H12O6(s) + O2(g)
Contrarily, the process of cellular respiration occurs in the MITOCHONDRIA. Cellular respiration involves the breaking down of food molecules to synthesize ATP (energy) for use during biochemical reactions. The general chemical reaction is as follows:
C6H1206(s) + 02(g) → CO2(g) + 6H20(I) + energy
 
        
             
        
        
        
The statement which best explains why carbon is present in so many kinds of molecules is because <u>it can form four covalent bonds.
<em /></u>It isn't rare on Earth, so A is incorrect. It has valence electrons, so C is incorrect. It cannot become an ion, so D is incorrect.<u>
</u>
        
                    
             
        
        
        
If you’re talking about too many people I’m guessing the limitation factors would be lack of resources and that would include lack of food and space.
        
             
        
        
        
The statement which is true about the scientific method is that "it is important to follow each step in order so the results are valid." Thus, the correct option is C. 
<h3>What is the Scientific method?</h3>
The scientific method may be characterized as an approach to investigation in which a problem is determined, appropriate data are collected, an assumption is composed of these data, and the hypothesis has been empirically experimented with.
Scientific methods always deal with a scripted format of identifying the problem, making a hypothesis, collecting the data associated with a hypothesis, synthesizing a methodology, observing it, and making a conclusion. 
Therefore, the correct option for this question is C. 
To learn more about Scientific methods, refer to the link:
brainly.com/question/17216882
#SPJ1
 
        
             
        
        
        
Answer:
Executive 
Explanation:
having the power to put plans, actions, or laws into effect.