A geographic range of an animal can give us a lot of information, for example: 
- the climatic conditions it adapted to: does it like wet or a dry environment? Does it like heat?
-<span>the parasites/predators that these butterflies may encounter - by knowing who else lives in that area, we can guess what </span>can threaten the butterflies
-similarly, we can guess what food is available to the butterflies. 
        
             
        
        
        
None is the correct answer
        
             
        
        
        
Get twenty people, from various genders and ages, to be your testees. Create a random test that has both analytical and logical problems, and get the 'testees' (I have no idea if this is a word or not) to do the test before and after spending time outdoors.
An independent variable is how much time they spend outside, and the dependent is how well they function afterwards. (I think).
The constant is what stays the same, so most likely the tests in this case (if taking my example)
I don't really know what you mean by control, though...
This is what I would've done if it was my homework assignment, I'd suggest looking over my answers to see if they're accurate or not. Hope I helped, and good luck.
        
             
        
        
        
It takes to much energy and there's a lot of dirt