Answer:
To entertain and develop inspiration and curiosity in people
Explanation:
The two basic factors which are most important in determining the current appearance of a star are its mass and its stage of life. Stars are born with 75% Hydrogen and 25% Helium, with no more than 3% of that being heavier elements. A star burns its supply of elements over its lifetime, the larger the mass of the star then the greater it's brightness, luminosity and surface temperature will be. Dependant on the stage of the star's life, the color of the light will change.
According to the research, risk assessment is a tool that helps us create cost-effective ways to protect our health and the environment.
<h3>What is risk assessment?</h3>
It is the process aimed at estimating the magnitude of the risks that could not be avoided, that is, it seeks to identify and eliminate risks present in the environment.
It allows you to adopt measures and make decisions focused on meeting the objectives established in terms of health and the environment.
Therefore, we can conclude that according to the research, risk assessment is a tool that helps us create cost-effective ways to protect our health and the environment.
Learn more about risk assessment here: brainly.com/question/52038
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Refraction is an effect that occurs when a light wave, incident at an angle away from the normal, passes a boundary from one medium into another in which there is a change in velocity of the light. Light is refracted when it crosses the interface from air into glass in which it moves more slowly. Since the light speed changes at the interface, the wavelength of the light must change, too. The wavelength decreases as the light enters the medium and the light wave changes direction. We illustrate this concept in Figure 3 by representing incident light as parallel waves with a uniform wavelength . As the light enters the glass the wavelength changes to a smaller value '. Wave "a" passes the air/glass interface and slows down before b, c, or d arrive at the interface. The break in the wave-front intersecting the interface occurs when waves "a" and "b" have entered the glass, slowed down and changed direction. At the next wave-front in the glass, all four waves are now traveling with the same velocity and wavelength
Answer:
The atmospheric pressure goes on decreasing as we go up above the sea-level. Therefore, the amount of oxygen also decreases at higher altitude. Due to this reason, mountaineers carry oxygen cylinders with them, while climbing high mountains
Explanation: