Answer:
they find temperature humidity air pressure wind speed and direction and other factors
Explanation:
 
        
                    
             
        
        
        
Answer:
Your respiratory system takes in oxygen from the air. It also gets rid of carbon dioxide. Your digestive system absorbs water and nutrients from the food you eat. Your circulatory system carries oxygen, water, and nutrients to cells throughout your body.
Explanation:
 
        
                    
             
        
        
        
I think that the answer is A.) prey
        
             
        
        
        
FALSE
All organisms use this "mechanism" to defend their food and shelter. Birds protect their nest just like all other animals and they fight for food. 
I hope this answers your question.
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Answer:
450 kilocalories.
Explanation:
Since only 1/10th of the energy that an organism consumes is passed onto the next level of the pyramid, that would mean only 500/10 = 50 kilocalories are passed on, and the remaining 500 - 50 = 450 kilocalories are used up.
Hope this helped!