Do you want the definition ?
        
             
        
        
        
Answer: After several days, a large bubble of gas collected in the upside-down beaker contains OXYGEN.
Explanation: 
Plants are known to be be autotrophic (producers) through the use of inorganic substance such as water, carbondioxide and light energy from sunlight in a process known as photosynthesis. 
An experiment was carried out by Latecia for investigation of the gas production of a water plant. It's therefore expected that OXYGEN gas which is the by-product given off during photosynthesis in green plants would be collected from the upside down beaker as gas bubbles.
 
        
             
        
        
        
Answer:
Yersinia pestis is the causative agent of plague
Explanation:
Rodents, such as rats, carry the disease. It is spread by their fleas.
 
        
             
        
        
        
Answer:
The correct answer is D
Explanation:
ATP is energy (starting from the sun) which is used within photosynthesis to form more energy/ATP.