Which of the Following Elements Are Abundant in the Crust

question 31

Multiple Choice

Which of the following elements are abundant in the crust?

• A)titanium
• B)gold
• C)oxygen
• D)nitrogen

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Definitions:

Chlorophyll

A pigment found in plants and algae that absorbs sunlight for photosynthesis, giving them their green color.

Denitrification

The microbial process of reducing nitrate and nitrite to gaseous forms of nitrogen, such as nitrogen gas, effectively removing nitrogen from ecosystems.

Gaseous Nitrogen

Nitrogen in its gaseous state, making up about 78% of the Earth's atmosphere and serving as a critical element for life.

Root Nodules

Swollen lumps on roots of certain leguminous plants containing symbiotic nitrogen-fixing bacteria, crucial for converting atmospheric nitrogen into a form plants can use.