Explanation:
making hypotheses is a scientific method 
 
        
                    
             
        
        
        
The expression or comment "Brain Freeze" means that the roof of your mouth is getting so cold that its affecting some of the nerves in your brain making it feel like a brain freeze.
        
                    
             
        
        
        
Answer:
Fewer Offspring than the environment can support
Explanation:
It takes time for  a creature to adapt to its  Environment. So that puts off 2.
Your guaranteed to get traits from your parents so that rules out #1
There isn't really an equal probability of survival for an offspring, ruling out #3.
So that leaves us with 4. I'm not biology expert, I'm just letting you know how I did this problem.  Just in case i'm wrong, I would double check with other answers :) 
 
        
                    
             
        
        
        
Every plant organ is adapted to its function. For example, leaves that are big and flat absorb plenty of sunlight for photosynthesis. Long roots keep a tree stable and take water from deep in the soil. Some plants have unusual adaptations.