Because the temperatures vary on high global temperatures and its economy.
        
             
        
        
        
Answer: in order for a scientific investigation to be valid A hypothesis must be tested throughout a Scientific investigation that can gather evidence and support it. 
Explanation: in any scientific investigation you have to have a testable hypothesis, without your hypothesis it’s not really a scientific investigation.
Hope this helped!
        
             
        
        
        
Question 1: The correct answer should be the one that shows the producer first, (->) followed by the herbivore, (->) with the carnivore last. 
Producers are organisms that harvest their own 'food' using things like the sunlight and water. Examples of producers are grass and other vegetation.

The herbivore, or an organism that consumes only vegetation and/or algae, consumes the producer.

 ⇒ 

The carnivore consumes meat, or other animals such as the herbivore. It's the last. 

 ⇒ 

 ⇒ 

Therefore the answer is 
B. 
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Question 2: I'm pretty sure that succession as well as regrowth after volcanic eruption (Just look at Mount St. Helens. After 30-35 years after the eruption, nature is 
still recovering) happens over time/slowly. I would say global warming [C](?) would be the answer. 
 
        
                    
             
        
        
        
I believe the contaminated meat were held at temps below 45 degrees Fahrenheit. hopefully u no the math to figure the c. temp.