Answer:
Scientists believe that fitness is not only the ability to have physical fitness but it also refers to the adaptations that make an organism survive in its environment.
According to biological studies, biologists believe that the ability of an organism to survive in a particular area and to pass on its characteristics to its offspring is fitness.
The health scientists define fitness as the ability of an individual to be physically fit and to move without pain.
The scientists which study psychology believe that fitness is the well functioning of a person;s body as well as his/her mind.
It would be puberty or secondary sexual characteristics
Answer:
Cohesion: the attraction force between the same type of molecules.
Adhesion: the attraction force between different types of molecules.
Viruses are not considered "alive" because they lack many of the properties that scientists associate with living organisms. Primarily, they lack the ability to reproduce without the aid of a host cell, and don't use the typical cell- division approach to replication.