Question

Carbon is present as carbon dioxide in Earth’s atmosphere at a concentration of about 0.04 percent by

volume, an amount that is increasing. Carbon dioxide is a greenhouse gas, and it is dissolved in all natural

waters. Carbon occurs in the crust of Earth in the form of carbonates in such rocks as marble, limestone, and

chalk and in hydrocarbons—the principal constituents of coal, petroleum, and natural gas. Carbonate

minerals are important sources of various metals, such as sodium, magnesium, calcium, copper, and lead.

The Keeling Curve, named after American climate scientist Charles David Keeling.

Questions:

• What does keeling curve interprets?

• What will happen to the carbon at ordinary temperature? Infer from the graph.

• What type of chemical reaction will be observed with carbon and its compounds?

Answer 1

Answer:

carbon is present as carbon dioxide

Explanation:

atmosphere at a concentration of about 0.04 percent by

volume, an amount that is increasing. Carbon dioxide is a greenhouse gas, and it is dissolved in all natural

waters. Carbon occurs in the crust of Earth in the form of carbonates in such rocks as marble, limestone, and

chalk and in hydrocarbons—the principal constituents of coal, petroleum, and natural gas. Carbonate

minerals are important sources of various metals, such as sodium, magnesium, calcium, copper, and lead.

The Keeling Curve, named after American climate scientist Charles David Keeling.

Questions:

• What does keeling curve interprets?

• What will happen to the carbon at ordinary temperature? Infer from the graph.

• What type of chemical reaction will be observed with carbon and its compounds?