The heart
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Answer:
Those individuals survive which are the best ones and are adapted to their environment. Their survival is due to the possession Of adaptations.
Explanation:
Those organisms which are survive in the harsh environment, it is mainly due to some adaptations which helps them to survive in an environmental condition which are not suitable for them and those organisms are removed from the environment which have no adaptations capabilities.
That is because gene expression is a process in the synthesis of proteins and without proteins our organisms could not function properly. Almost all things that occur in our body are results of proteins being synthesized and these proteins travel through our body activating other processes. When not synthesizing proteins, different types of RNA are synthesized.
Answer: The atom of carbon is able to form macromolecules because it has only four electrons in its outer shell. This is the reason why it can bond with four other carbon atoms. The bonds that it forms with other carbon molecules are very stable.
Explanation: I did my research and i also took Science class. :)
Hope this Helps :).