Answer: Purine; is equal to; pyrimidine
Explanation:
When a segment of DNA is examined then the nucleotide in one DNA molecule, it will be expected that the sum of purine in one strand will be equal to the sum of the pyrimidine in the other strand. 
Adenine combines with Thymine and Cytosine combines with Guanine in 1:1 ratio.
More specifically the ratio of purine is to pyramidine is 1:1 in an organism. This pattern is seen in both the strands of the DNA.
 
        
             
        
        
        
Answer: It is a product formed.
Reasoning: The plant uses the energy from the glucose to survive and to photosynthesize. Glucose is the product of photosynthesis. 
        
             
        
        
        
Answer:
having more air spaces around the spongy mesophyll cells 
 
        
             
        
        
        
Answer:
A hypothesis is a possible explanation for a set of observations or an answer to a scientific question. A hypothesis must be testable and measurable. This means that researchers must be able to carry out investi- gations and gather evidence that will either support or disprove the hypothesis.
Explanation: