A. Snails and crayfish would not survive in Birch Lake at a pH of 6.2.
B. Once they die out, the walleye will disappear as well.
 
        
             
        
        
        
Answer:
None of these are present
 
        
             
        
        
        
The right option is 5) rating
scales and frequency counts
Personality assessment is the
measurement of personal characteristics of an individual. Personality
assessments conducted by behaviorists sometimes make use of rating scales and
frequency counts as they allow easy characterization of people and their
behaviour.
 
        
             
        
        
        
Answer:
sweepstake route
Explanation:
From the view of the horses, the ocean barrier would be seen as a  <u>sweepstake route</u>.
<em>By definition, the sweepstake route refers to a rather difficult or dangerous path through which animals can move from one place to another. No animal would take this path ordinarily except by pure chance or when events leave no other option.</em>
In the illustration, no horse would engage in an adventure of swimming across the ocean to North America until the European settlers decided to ferry them across. Hence, to the horses, the ocean barrier represents a sweepstake route.
 
        
             
        
        
        
Explanation:
When yeasts eat sugar and turn it into energy, they also produce carbon dioxide.