Answer:
plant cells, palisade mesophyll cell, spongy mesophyll cell
animals- mitochondria, ribosomes 
 
        
             
        
        
        
An ecosystem is a geographic area where plants, animals, and the other organisms work for the existence of bubble life.
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Variation of ecological habitats within a species is characteristic of which type of diversity?</h3>
The variation of ecological habitats within a specie is character of the type of diversity is known as Ecosystem Diversity.
Ecosystem is defined as the different kinds of habitats, ecological processes and communities. A biological community is defined by the specie which occupy a specific area and the interactions between the species.
So we can conclude that: An ecosystem is a geographic area where plants, animals, and the other organisms work for the existence of bubble life.
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Chromosome is to cactus as gene is to needle.
        
                    
             
        
        
        
Answer:
None of the questions asked can be answered completely from the graph provided 
Reason
1) Which source of electricity generation caused the most emissions?: The graph does provide the information of greenhouse gas emission from different sectors like electricity, transport, industry, agriculture, commercial and residential.  Electricity can be generated from several sources like hydrothermal, nuclear, etc. However, information of how these sources contributes towards greenhouse gas emission via electricity sector is not provided in graph
2) What types of industries are responsible for greenhouse gas emissions?: The graph does provides the information about total greenhouse gas emissions from industries. However, individual contribution from different types of industries cannot be answered.
3) Which natural sources of greenhouse gas emissions are shown here?: The graph provides information about greenhouse gases emission only due to human activity like electricity generation, agriculture, etc. and not from natural sources. 
4) Why is agriculture the largest source of greenhouse gas emissions?: The reason for largest emission of greenhouse gas due to agriculture cannot be answer from information provided.
5) What caused the dip in greenhouse gas emissions in transportation after 2007?: The reason for dip in greenhouse gas in transportation cannot be answer from information provided.
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Explanation: