Answer to #1:
<span>Kilograms
Explanation:
The base metric unit of mass is grams.
Pounds also measure weight, but they are part of the imperial system.
Answer to #2:
Mass
Explanation:
Mass is how much space an object takes up, it is the amount of matter in an object.
Volume, on the other hand, is how much space an object takes up.
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They will become extinct and the level of oxygen in the atmosphere decreases and. carbon emissions increases
        
             
        
        
        
The answer is A. skeletal system
        
                    
             
        
        
        
Answer:
Actin filaments return to their original positions (does not occur in muscle contraction, according to the sliding filament model).
Explanation:
 
        
             
        
        
        
Larger animals may be going into hibernation and the berries wolves eat may be out of season.