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

Science

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

A. Troposphere
B. Stratosphere
C. Mesosphere
D. Thermosphere

The stratosphere contains the ozone layer, which absorbs harmful UV radiation.

Which element is found in abundance in the Earth's atmosphere?

A. Oxygen
B. Nitrogen
C. Carbon
D. Hydrogen

What is the closest star to Earth?

A. Proxima Centauri
B. Alpha Centauri A
C. Sirius
D. Betelgeuse

Which of the following is a transition metal?

A. Sodium
B. Iron
C. Chlorine
D. Aluminum

Which of the following is a greenhouse gas?

A. Oxygen
B. Nitrogen
C. Carbon Dioxide
D. Hydrogen

What is the function of the nucleus in a cell?

A. Energy production
B. Storage of nutrients
C. Genetic control
D. Protein synthesis

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

A. Saltwater
B. Air
C. Orange Juice
D. Italian Salad Dressing

What is the primary function of the cell membrane?

A. Energy production
B. Protection
C. Genetic control
D. Regulation of substances entering and leaving the cell

In optics, what is the term for the point at which parallel light rays either converge or appear to diverge after passing through a lens?

A. Focal Point
B. Nodal Point
C. Optical Center
D. Antifocal Point

Which cell organelle is responsible for protein synthesis?

A. Endoplasmic Reticulum
B. Golgi Apparatus
C. Ribosome
D. Lysosome

In the periodic table, which period do the alkaline earth metals belong to?

A. Period 1
B. Period 2
C. Period 3
D. Period 4