There is a lot of competition. From food, water, shelter, mates... only the best, the organisms with the desirable traits survive. They survive and are able to reproduce, passing on their genes to the next generation. As this natural selection occurs, the traits that are necessary for survival are passed on, and over a long period of time this results in evolution.
Incomplete question. The full question read;
6. Which isn’t a word that shows the outlet isn’t completely sure about a particular statement?
Answer:
<u>certainly</u>
Explanation:
Of course, media outlets would not use the word<em> "certainly" </em>to refer to a particular statement they are not sure of because the word is used connotatively when what is been said is believed to be true.
Hence, other words such as "possibly", "likely" are used when they are not completely sure about a statement.
Smaller teeth and jaws are due to genetic variation, which occurred by mutations (errors in DNA replication) and were selected to fill a suitable niche.
<h3>What is evolution?</h3>
Evolution is the mechanism of change of one species to adapt given environment, whereas mutations are the raw material for evolution.
In this regard, scientific evidence supports the fact that jaws evolved to become shorter in humans and thus adapt to a pastoral lifestyle.
In conclusion, smaller teeth and jaws emerged by mutations and were selected to fill a suitable niche.
Learn more about human evolution here:
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Answer:
handle and the dial is the correct answer
The answer is a hope this helps