A professor of environment studies at the University of Nebraska, I was alarmed to discover that local farmers are increasing their use of pesticides on wheat fields. While these chemicals help get rid of the insects that damage the crops, they also cause great harm to butterfly and honey bee populations.

answer: a. a gene that causes a specific trait.

enhanced global partnerships and exploration capabilities may advance international preparedness for protecting the earth from catastrophic events such as some asteroid strikes, advancing collaborative research on space weather and protecting spacecraft by developing new means for space debris removal.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.