Its A and B i think because when cold air and warm air.mixed it.form precipitation like tornado
        
                    
             
        
        
        
Answer:
Zebra mussels negatively impact ecosystems in many ways. They filter out algae that native species need for food and they attach to--and incapacitate--native mussels. Power plants must also spend millions of dollars removing zebra mussels from clogged water intakes.
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Answer:
<em>The correct option is B) as the light colored moths were seen and eaten, the allele for dark colour became more prevalent in the population.</em>
Explanation:
The process of natural selection tends to favour those organisms which are better adapted to live in an environment. Evolution changes the allele frequencies of a population over time depending on the traits favoured by natural selection.
Before the industrial revolution, the colour of the trees was lighter and hence, the light coloured moths were better adapted to such environments as they could hide from predation. After the industrial revolution, the colour of the woods of trees became darker. The light coloured moths were no more able to hide from their predators and hence their population declined. 
 
        
             
        
        
        
A - the spindle from the kinetochores that attaches to the chrs and pulls them towards the poles is a microfilament.
 
        
                    
             
        
        
        
Anaerobic respiration can be sustained for short periods of time because you aren’t using oxygen. We need oxygen in our body to work our muscles and pump our heart.