Exam 16: Physical Cycles and the Biosphere

The presence of an El Niño event may produce damaging __________ changes in a coral reef.

Some people say that China's number one export is air pollution. This is because

An overgrowth of algae is often directly the result of

Polar bears are being affected by temperature changes because

Greenhouse gases cause an increased temperature on the Earth's surface because they

Approximately _____ percent of the Earth's water is salt water.

Sublimation refers to the process of converting a

As you have learned in Chapter 16, global warming is taking place. Some sources estimate that the temperature on Earth will increase about 0.5 degrees Celsius over a 100-year period. Although scientists do not agree on the amount of increase, let's presume that this will result in an approximate seven-inch rise in sea level. Let's look at town A that has an average nightly temperature of 22 degrees Celsius. Some species of pythons have been released by overwhelmed owners and are breeding in more southern locations. These snakes require a nighttime temperature no lower than 25 degrees Celsius. In how many years will the pythons be able to survive in town A?

As you have learned in Chapter 16, global warming is taking place. Some sources estimate that the temperature on Earth will increase about 0.5 degrees Celsius over a 100-year period. Although scientists do not agree on the amount of increase, let's presume that this will result in an approximate seven-inch rise in sea level. If a national park is located at twenty inches above sea level, when approximately will it be fully submerged?

Over the past 50 years, the atmospheric level of carbon dioxide has