Which of the following statements about scientists' views of global warming is true?
a.
nearly all scientists agree that the earth's temperature is rising, but many disagree about whether humans are responsible, while a small percentage agree that humans are responsible.
b.
nearly all scientists agree that the earth's temperature is rising and that humans are responsible, while a small percentage do not agree that humans are responsible.
c.
nearly all scientists agree that the earth's temperature is rising, but most agree that humans are not responsible.
d.
there is no consensus among scientists on this issue; they disagree over whether the earth's temperature is rising.

select the best answer from the choices provided.

the correct answer is letter a.

explanation:   global warming has been one of the most debated topics in recent years, both in the international scientific community and in other areas of society, such as the press and the internet. until recently, the consensus was that the earth would be warming at an ever faster rate due to human activities. however, nowadays, the so-called “skeptical” challenges are becoming increasingly well-known.

the correct answer is individualism and exchange. at this stage, children begin to question the rules, because they can see that there is more than one side to them. different individuals have different viewpoints. they won't be able to reach this stage because of ignorance, a lack of ethics or personal biases. that is because people with that characteristiscs are not able to distinguish what is good or what is bad and they can't pursue their individual interests.

the correct answer is d