Think about how the geologic time scale was created and how it is divided. Then answer the following questions. How did scientists form the geologic time scale?
How is this scale organized?
What processes changed the Earth's environment during Precambrian time?

Explain two reasons you think it is important for scientists to search for new ways to treat cancer

1. which of the following is correct regarding opiates/opioids: a. they all have a natural component as a starting pointb. they have low addiction possibilitiesc. methadone binds to some of the same receptorsd. a and care correcte. all are correct

20 points and brainlist 1. london has suffered from terrible air pollution for at least seven centuries. why is the city so prone to its famous “london fog? ” what did london do to get rid of its air pollution? 2. why does air pollution cause problems in developing nations more than in developed ones?