Starting billions of years ago, in what way did algae change the atmosphere
of earth?
a. oxygen was converted to ozone.
o
b. nitrogen was converted to oxygen.
o
c. carbon dioxide was converted to oxygen.
o
d. methane was converted to oxygen.

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

What is the most stable monatomic ion formed from nitrogen

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?