Hii! I believe the answer is D. The brown beetles were better able to survive to reproductive age and pass on their traits. (:
For an organism to function properly all the physiological factors should be favorable. These physiological factors include water level, pH, temperature etc. To perform the basic function of the life, it is important to maintain the physiological parameter in a particular range.
In case, these physiological parameters are not balanced, then the body of the organism does not perform well and causes illness.
So, the first blank can be filled with temperature and the second blank can be filled with range.
The elements that are best known for helping performers memorize an epic poem are rhyme, rhythm, and repetition of certain words.
