Ferns<span>, </span>horsetails<span>, </span>mosses<span>, and </span><span>liverworts, flowers, mint</span>
        
             
        
        
        
Answer:
Temperature: Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction. However, extreme high temperatures can cause an enzyme to lose its shape (denature) and stop working. pH: Each enzyme has an optimum pH range.
Explanation:
 
        
             
        
        
        
Answer:
A. Weather.
Explanation:
Usually or average are terms that are often associated with weather conditions. 
Weather is the average atmospheric conditions prevalent in a particular place over a short period of time. 
When forecasting weather, predictive terms like usually are employed to denote expected weather events