Answer:
Natural selection and selective breeding can both cause changes in animals and plants. The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. For this reason selective breeding is sometimes called artificial selection.
Explanation:
 
        
             
        
        
        
To speed up chemical reactions by decreases the amount of energy needed In the reaction
        
             
        
        
        
There's so much confusion going on between<span> the acronyms </span>RER<span> and RQ. At the state of rest the </span>RER<span>, completely known as the </span>respiratory exchange ratio<span>, is actually the same as RQ or </span>respiratory quotient<span>. ... The RQ is a metabolic </span>exchange<span> of gas </span>ratio<span> that is equal to CO2 production over oxygen uptake </span>
        
             
        
        
        
Answer:
Ostia are tiny pores present all over the body of sponges. its function is to let the water, along with desire nutrient flows interior of the sponges.