Which of the following terms refers to areas of gas on the suns surface that are cooler than the gases around them?
a) prominences
b) sunspots
c) cool spots
d) solar winds

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

What are the trends and exceptions to the trends in electron affinity?

Individuals within populations exhibit some diversity. as a result of possessing slightly different traits, some individuals are better able to survive and reproduce than others. if these individuals changes in the characteristics of the population may occur over time. the cumulative change in these characteristics is known as