What is the chemical formula for nitric acid?

Which layer of the Earth's atmosphere is responsible for protecting life on Earth by absorbing harmful ultraviolet (UV) radiation from the Sun?

Which of the following is an example of a heterogeneous mixture?

What is the term for the process by which water vapor is released from plants into the atmosphere?

What is the name for the phenomenon where a wave bends as it passes from one medium to another at an angle?

What is the name for a large body of air with relatively uniform temperature and humidity, typically covering vast areas and influencing weather conditions?

Which of the following is a transition metal?

Which of the following is a type of landform formed by the erosion of sedimentary rock layers, often resulting in steep cliffs and valleys?

What is the name for a large, circular depression formed by the collapse of an underground cave or magma chamber?

What is the term for the point on the Earth's surface directly above the earthquake's origin, where seismic waves are first felt?