Why is the atmosphere essential for life? Atmosphere is very important for sustaining life: It contains various gases like O2, CO2, N2 which are required for various life processes by plants and animals. (ii) gas is used by plants to prepare food by the process called photosynthesis (iii) Oxygen is required for burning, combustion and […]
Which type of stars are the youngest?
Which type of stars are the youngest? Yellow dwarfs are small, main sequence stars. The Sun is a yellow dwarf. A red dwarf is a small, cool, very faint, main sequence star whose surface temperature is under about 4,000 K. Red dwarfs are the most common type of star…. TYPE Star IV Subgiants V Main […]
What are the 5 types of natural selection?
What are the 5 types of natural selection? Stabilizing selection, directional selection, diversifying selection, frequency -dependent selection, and sexual selection all contribute to the way natural selection can affect variation within a population. What is the rarest pattern of natural selection? The shape comes from the fact that both extremes are selected for during disruptive […]
What is the blue wire in a light fixture?
What is the angle of incidence when the incident ray is normal to the interface?
What is the angle of incidence when the incident ray is normal to the interface? Complete step-by-step answer: If the incident ray is on the same path as the normal to the surface, the angle of incidence will be zero. Therefore, the angle of incidence when light incident ray is along the normal to interface […]
Are greenhouse gases good or bad?
Are greenhouse gases good or bad? The greenhouse effect is a good thing. It warms the planet to its comfortable average of 59 degrees Fahrenheit (15 degrees Celsius) and keeps life on earth, well, livable. Without it the world would be a frozen, uninhabitable place, more like Mars. Why is greenhouse gas bad? Greenhouse gases […]
What happens if you breathe in volcanic ash?
What happens if you breathe in volcanic ash? Inhalation of volcanic ash can be very detrimental to human health, due to the harmful aerosols and poisonous gases the ash is made up of. Health effects inlcude respiratory problems, eye problems, and skin irritiation. One long-term effect of volcanic ash is silicosis. How dangerous is ash […]
What is the relationship between S and P waves?
What is the relationship between S and P waves? P waves travel fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives […]
Is the ability of the heart lungs and blood vessels to deliver oxygen to your body tissues?
Is the ability of the heart lungs and blood vessels to deliver oxygen to your body tissues? Cardiovascular endurance is the ability of the heart, lungs and blood vessels to deliver oxygen to working muscles and tissues, as well as the ability of those muscles and tissues to utilize that oxygen over an extended period […]
What are 4 ways the periodic table is organized?
What are 4 ways the periodic table is organized? The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. What are the rows on the […]