Is electron affinity the opposite of ionization energy?

In an energy pyramid, which level has the most available energy?

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.