The release of fluorocarbons used in household sprays destroys the ozone layer in the upper atmosphere. suppose the amount of ozone is given by , 0025 . 0 0 t e m m − = where t is measured in years. how long will it take for 70% of the ozone to disappear, rounded to the nearest year?

What two properties affect the density of ocean water

Based on this map, which statement about africa’s economic activity is most accurate? a) coastal countries are all members of opec b) economic development is more common with opec nations c) coastal countries have more access to productive resources d) economic development is more common above the sahara desert

How do oceanographers measure the salinity of ocean water?