Put these energy technologies in chronological order based on when they became important to industry.
1) steam
2)coal
3)oil
4)nuclear

in this specific order !!

What happens to rock when acid reacts with it?

Complete the activity titled "comparative urban environments." every city is shaped by different cultural forces. in one to two paragraphs, contrast the culture of two different cities from this activity: new york and buenos aires. what makes these cities stand apart from each other culturally? what is unique about each city’s attitude, language, habits, foods, or architecture?

5. what is a red giant? can our sun become a red giant? why or why not?