<span>"Now, for the next few questions, I want to ask about your family's TV viewing habits" is an example of a transition. </span>
The notion of danger differs according to the developed perspective, however in general those situations that have effects on the planetary biological cycles are usually accepted as those that represent more danger.
Different situations of cultural, social, political and economic origin are often taken as situations of danger to human life, as these can end in great conflicts and tragedies.
Given the above, it is necessary to clarify that most of the latent hazards have an anthropic origin, the continuous increase in consumption and the forcing of productivity entails large uses of energy and large accumulations of industrial waste and toxic materials.
Also the excessive consumption of antibiotics, the mismanagement of biological wastes and waste, among others, pose risks of pandemics due to the lack of effectiveness of antibiotics.
In addition to the above problems, economic and political models do not contribute to the situation, allowing excessive accumulation and unequal distribution, scarcity and lack of access to services and necessities, while those who have access see each time more restricted their rights and privacy increasingly diminished.
Answer
The main dangers for the planet and human life in the 21st century are <em>environmental, sanitary-medicinal, social, political and economic.</em>
Place theory, frequency theory, duplicity theory, and volley theory, have all been provided as explanations for "<u>pitch</u>" perception.
Pitch is the perceptual trait of a sound that relates to its recurrence. Pitch is identified with tone recurrence in unadulterated tones and to the basic in complex tones. Pitch perception enables us to arrange sounds on a melodic scale.There is fractional help for every one of Place theory, frequency theory, duplicity theory, and volley theory, showing that each of the three components assume a job in pitch observation.
The statement is true that the models of urban growth fail to account for the ancient and medieval cities, many European cities, cities in the least industrialized nations and urban planning. The primary models are concentric zone, sector, multiple-nuclei, and peripheral.
The answer is letter A.
