Answer:
bottom of the periodic table
Explanation:
 
        
                    
             
        
        
        
Answer:b) The air at high altitudes are less dense, so its harder to breathe.
Explanation:
AS altitude increases, the air pressure drops. This reduces the amount of gas molecules in the air so the air becomes less dense compared to air closer to sea level.
 
        
                    
             
        
        
        
1. Mattias Schleiden
2. Robert Hooke
3. Microscope
4. Cell membrane
5. Nucleus
6. Nuclei
7. Nuclear membrane 
8. Endoplasmic Reticulum
9. Ribosomes
10. Endoplasmic Reticulum
11. Lysosome 
12. Vacuole
13. The Cell Wall- provides the plant structure 
Chloroplasts- preform photosynthesis 
Larger Vacuole- holds excess water for the plant to use later
        
             
        
        
        
 C) Satellites 
Since they view from a distance and aren’t Immersed in the environment they are witnessing
        
             
        
        
        
Answer:
D
Explanation:
temperature can change the arrangement of the protein molecules which is called denaturation. thus changing the shape for the protein receptor.