In the periodic tables metals are on the left side and nonmetals are in the right side.... so we can know whether an element is metal or nonmetal by it's position on the periodic table..
Optimization refers to the activity of making the most or best efficient use of a resource of situation. Optimization suggests that it is probable to sustain performance in some areas via spontaneous practice and the application of new technology.
The older adults get involved in numerous sexual activities, companionship is essential to age individuals. The optimization in older adults’ sexual activity can be expressed by getting involved in more kissing, cuddling, and fantasizing in comparison to intercourse for satisfying the sexual activity.
The statement given in the question is TRUE.
Both government and many business organization have make grand efforts to conserve and preserve natural resources and to keep the environment from been polluted. The government has enacted many laws that has to do with conservation of environment and natural resources, some of these laws have to do with how much pollutant business organizations can release into the environment. Overall, all the preservation and conservation efforts have impacted positively on the environment.