Gamma rays
Each section of the electromagnetic (EM) spectrum has characteristic energy levels, wavelengths, and frequencies associated with its photons. Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies.
The answer is: C. both a and b
Midlife transition typically happen between the age of 35 -45. During this period, people would often conduct a self-examination on whether they are fulfilling their true potential in their life. If they believe they don't, then they would most likely experience a midlife crisis and started to seek various excitement to cope with the desperation.
In questions like this one , you should first read the passage and then read the instructions. DO NOT read the alternatives. Then , with the information you got from the passage , try to awnser the question without looking at the alternatives. Now compare your awnser to the alternatives and eliminate the ones you are sure are wrong.
From the passage you learn that light pollution , caused by man-made lights , sometimes creates fogs and hazes that make the night sky look like a "dark sheet of paper".
If you compare what you understood from the passage to the alternatives , you ll realize that A) is the one that makes more sense and its more compatible with your awnser.
If you eliminated all alternatives you could but there still are 2 choices remaining and you are not sure which one it is , go back to the passage and try to find evidence for each alternative and try to eliminate one of the alternatives
AWNSER : A)
The ecliptic is the plane of Earth's orbit around the Sun. From the perspective of an observer on Earth, the Sun's movement around the celestial sphere over the course of a year traces out a path along the ecliptic against the background of stars.