Examlex
Where was supernova 1987a located?
Catastrophes
Severe and unexpected events that cause significant disruption and distress, impacting mental and physical health.
Sept. 11
The date of a series of coordinated terrorist attacks in the United States in 2001, targeting the World Trade Center and the Pentagon.
Coronary Heart Disease
A cardiovascular disorder that involves reduced blood flow to the heart muscle due to the buildup of plaque in the arteries of the heart, leading to heart attacks and chest pain.
Leading Cause
The primary or most common factor contributing to a disease, phenomenon, or mortality in a specific population or demographic.
Q9: Why does conversion of its core to
Q16: Henrietta Leavitt first showed the relationship between
Q46: In terms of Jupiter masses,what is the
Q58: Which of the following is NOT a
Q66: Collisions between galaxies:<br>A) are much rarer than
Q87: How are Cepheids and RR Lyrae stars
Q90: What spectral type of star that is
Q90: Looking at the elements that make up
Q93: The evolution of a protostar slows significantly
Q104: What explanation does general relativity provide for