Answer:
B. Heterotrophs cannot create their own food
Explanation:
Autotrophs, on the other hand, can.
It was probably because when a area had too much pollution, they could easily migrate away somewhere else by flying, while humans have to stay everywhere. Another reason could've been that birds can adapt to places quicker than other animals.
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The basic units that are put together over and over to build a strand of dna are called as nucleotides.
<u>Explanation:</u>
DNA is a heteropolymer that involves many monomers that is the nucleotides that are joined together by phosphodiester bonds in order to develop a complete DNA. The nucleotides consists of nitrogenous bases, phosphate groups and the sugar molecules that are bound together to form a complete nucleotide. The phosphate groups form a backbone through which the nucleotides are joined together.
Testes are<span> moved aside to see the kidneys in a male frog</span>,<span>these organs </span>area are settled around<span> the kidneys, </span>they're<span> pale in </span>color<span> and </span>circular.
While,females do not have testes,<span>though </span>you will<span> see a </span>wavy<span> structure </span>round the<span> the </span>urinary organ<span>, these </span>are the oviducts.<span>They are suppose to be removed </span>so as to examine<span> the kidneys of </span>the feminine<span> frog.</span>
