So, the population went up with every spring season and fell slightly in the winter; it increased within the course of 10 years
        
             
        
        
        
Answer:
The food type changes in a given environment, then the amount of each type of bird beak will changes as birds with beaks more suited to the available food will consume more successfully over time. The independent variable of the lab is the type of food that is available to the birds.
 
        
             
        
        
        
Answer:
Proton has a positive charge.
Neutron has a neutral or no charge.
Electron has a negative charge
Explanation:
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If blood typing is not available in an emergency situation, O-Negative blood is universally accepted by all blood types because it is absent of any antibodies. Therefore, if O-Neg blood is on hand in emergency situations, it can be given to anyone.
        
             
        
        
        
Answer:
There are two major classes of hormones 1. Proteins, Peptides, and modified amino acids 2. Steroids. In general, steroids are sex hormones related to sexual maturation and fertility.
Explanation:
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