3 Which of the following human actions would benefit the
surrounding ecosystem?
1 draining wetlands
2 releasing waste water into a river
3 carpooling
4 urban sprawl

You 4. you have been swimming in your neighbor’s pool for an hour. the relative humidity of the air is 30 percent. will you feel warm or cool when you step out of the pool? explain your answer.

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

What must occur for air masses to form fronts