Body b will have a force 4 times stronger than body a, causing body b to reverse the direction of body a
        
             
        
        
        
Less physical waste, cleaner energy, less environmental effects, list goes on.
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Answer: Disagree
Explanation:
 I tend to disagree with this statement because predators actually have a place in ecosystems to keep prey species from becoming overpopulated, hence, the extent of the overpopulation would likely have been much less if the natural predators were allowed to play a role in controlling the deer population. 
 
        
             
        
        
        
Answer:
Active transport
Explanation:
Diffusion is when particles (like perfume) spread out everywhere from an area where there is a lot of it to where there is a little to none of it. Active transport is the opposite. A cell for example would use it's own energy to absorb nutrients when it already has quite a lot. Naturally diffusion would make the particles or nutrients go out of the cell because there is a lot of it inside the cell not outside, so active transport is used to absorb as much as the cell can from around it, even when it is full.
 
        
             
        
        
        
<span><span>All cells have a plasma membrane, ribosomes, cytoplasm, and DNA.
</span>Prokaryotic cells lack a nucleus and membrane-bound structures.
<span>Eukaryotic cells have a nucleus and membrane-bound structures called organelles.</span></span>