Biological or "Darwinian" fitness is being able to live long enough to reproduce and keep the population or species alive.
<span>Climax community=when the ecosystem reaches its mature state. After every disturbance, the ecological succession will culminate in the climax community. For example, ecological succession triggered by fires in Yellowstone Park culminates in pine forests. Pioneer species are the first species to colonize an area after a disturbance occurs. They reproduce quickly and survive in harsh conditions. For example, lichens.</span>
DNA
Nucleic Acids are the basis for the storage and transmission of hereditary information in all cells. Determines a cell's function and manufactures proteins & enzymes. Encodes instructions for making proteins and RNA. DNA stores the “operating instructions” for a cell.
The softest part of the human body is the brain. <span>It is the </span>part<span> that is most changeable due to external influences, and so, it is the "</span>softest<span>". It the most sensitive part of our body. Hope this answers the question. Have a nice day.</span>