Answer:
There are two alleles for freckles.
Explanation:
A positive human impact on the environment occurs when a person takes action to improve society, nature and its resources.<span> Acting positively, even in a small manner, has a major impact on the environment, especially when it is done consistently.
</span>Humans can effect<span> the </span>ecosystem<span> in a </span>negative<span> way ,by pollution, waste dumping</span><span>, over hunting of animals,over fishing,industrial gases,energy ...</span><span>
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Organisms that obtain enegy from the food they consume is called a heterotroph or consumer
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