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Radiation is the mechanism of heat transfer by which heat travel in a straight line at the speed of light, allowing heat to travel through vacuums and air spaces.
Radiation in physics is the emission or transmission of energy in the form of waves or particles through space or matter medium. This includes:
- Electromagnetic radiation such as radio waves, microwaves, infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays (γ)
- Particle radiation beams such as alpha rays (α), beta rays (β), proton rays, and neutron rays (with static energy non-zero particles)
- Acoustic Radiation such as ultrasound, sound waves, seismic waves (due to physical transmission media)
- Gravitational radiation in the form of gravitational waves, or waves of curvature of space-time
Radiation is often classified as either ionizing or non-ionizing, depending on the energy of the particles it hits.
Learn more about Radiation here : brainly.com/question/893656
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I think it's A
the cell membrane contain protein molecules
Answer:
If you have anyone of these answer choices..Its D.All of the Above
Explanation:
A. Cells are the structures that contain all of the materials necessary for life
B. Cells are found in all organisms
C. Cells are sometimes specialized for particular functions
D. All of the above
