Science Quiz One

What is the least common element in a living being?

• carbon

• dioxide

• helium

• oxygen

What is the process where plants make food using the sun?

What is runoff?

• precipitation that flows over the surface of soil

• swelling on a plant root

• brown smog from air pllutants

• cycling of chemical elements

What is a nodule?

• precipitation that flows over the surface of soil

• swelling on a plant root

• brown smog of air pollutants

• cycle of chemical elements

What is it called when water gathers?

What is it called as a plant converts nitrogen in the atmosphere to something it can use?

• denitrification

• oxygen

• nitrogen fixation

• cellular respiration

What can cause air pollution?

• nodules

• legumes

• fossil fuels

• emission