All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
Class 12 Exam  >  Class 12 Questions  >  Can we call human evolution as adaptive radia... Start Learning for Free
Can we call human evolution as adaptive radiation ? Give reason.
Clear all your Class 12 doubts with EduRev
Most Upvoted Answer
Can we call human evolution as adaptive radiation ? Give reason.
human revolution cannot be called adaptive radiation because adaptive radiation is an evolutionary process that produces new species from single,rapidaly diversifying lineage which is not case with human revolution. Human revolution is a graded process that took place in slowly time.
Explore Courses for Class 12 exam

Similar Class 12 Doubts

Read the following text and answer the following questions on the basis of the same:Ozone layer depletion:We are all exposed to UV radiation from the sun. The sun is by far the strongest source of ultraviolet radiation. UV radiation spectrum is divided into three regions called UVA, UVB and UVC. As sunlight passes through the atmosphere, all UVC and most UVB is absorbed by ozone, water vapour, oxygen and carbon dioxide. UVA is not filtered as significantly by the atmosphere.The three types of UV radiation are classified according to their wavelength. They differ in their biological activity and the extent to which they can penetrate the skin. The shorter the wavelength, the more harmful the UV radiation. The UV region covers the wavelength• UVA (315-400 nm)• UVB (280-315 nm)• UVC (100-280 nm).Short-wavelength UVC is the most damaging type of UV radiation. However, it is completely filtered by the atmosphere and does not reach the earth's surface.UV level reaching the earth changes with latitude and altitude.UV levels are higher closer to the equator. Closer to the equator the sun's rays have a shorter distance to travel through the atmosphere and therefore harmful UV radiation absorption is less.With increasing altitude less atmosphere is available to absorb UV radiation. With every 1000 m in altitude, UV levels increase by approximately 10%.Ozone is a particularly effective absorber of UV radiation. As the ozone layer gets thinner, the protective filter activity is progressively reduced. Consequently, the people and the environment are exposed to higher levels of UV radiation, especially UVB.Ozone depletion is caused by human-made chemicals released into the atmosphere.Q. Ozone layer depletion is caused by

Read the following text and answer the following questions on the basis of the same:Ozone layer depletion:We are all exposed to UV radiation from the sun. The sun is by far the strongest source of ultraviolet radiation. UV radiation spectrum is divided into three regions called UVA, UVB and UVC. As sunlight passes through the atmosphere, all UVC and most UVB is absorbed by ozone, water vapour, oxygen and carbon dioxide. UVA is not filtered as significantly by the atmosphere.The three types of UV radiation are classified according to their wavelength. They differ in their biological activity and the extent to which they can penetrate the skin. The shorter the wavelength, the more harmful the UV radiation. The UV region covers the wavelength• UVA (315-400 nm)• UVB (280-315 nm)• UVC (100-280 nm).Short-wavelength UVC is the most damaging type of UV radiation. However, it is completely filtered by the atmosphere and does not reach the earth's surface.UV level reaching the earth changes with latitude and altitude.UV levels are higher closer to the equator. Closer to the equator the sun's rays have a shorter distance to travel through the atmosphere and therefore harmful UV radiation absorption is less.With increasing altitude less atmosphere is available to absorb UV radiation. With every 1000 m in altitude, UV levels increase by approximately 10%.Ozone is a particularly effective absorber of UV radiation. As the ozone layer gets thinner, the protective filter activity is progressively reduced. Consequently, the people and the environment are exposed to higher levels of UV radiation, especially UVB.Ozone depletion is caused by human-made chemicals released into the atmosphere.Q. Most harmful UV radiation band is

Read the following text and answer the following questions on the basis of the same:Laser:Electromagnetic radiation is a natural phenomenon found in almost all areas of daily life, from radio waves to sunlight to x-rays. Laser radiation – like all light – is also a form of electromagnetic radiation. Electromagnetic radiation that has a wavelength between 380 nm and 780 nm is visible to the human eye and is commonly referred to as light. At wavelengths longer than 780 nm, optical radiation is termed infrared (IR) and is invisible to the eye. At wavelengths shorter than 380 nm, optical radiation is termed ultraviolet (UV) and is also invisible to the eye. The term “laser light” refers to a much broader range of the electromagnetic spectrum that just the visible spectrum, anything between 150 nm up to 11000 nm (i.e. from the UV up to the far IR). The term laser is an acronym which stands for “light amplification by stimulated emission of radiation”.Einstein explained the stimulated emission. In an atom, electron may move to higher energy level by absorbing a photon. When the electron comes back to the lower energy level it releases the same photon. This is called spontaneous emission. This may also so happen that the excited electron absorbs another photon , releases two photons and returns to the lower energy state. This is known as stimulated emission.Laser emission is therefore a light emission whose energy is used, in lithotripsy, for targeting and ablating the stone inside human body organ.Apart from medical usage, laser is used for optical disk drive, printer, barcode reader etc.Q. What is the full form of LASER ?

Can we call human evolution as adaptive radiation ? Give reason.
Question Description
Can we call human evolution as adaptive radiation ? Give reason. for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Can we call human evolution as adaptive radiation ? Give reason. covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can we call human evolution as adaptive radiation ? Give reason..
Solutions for Can we call human evolution as adaptive radiation ? Give reason. in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Can we call human evolution as adaptive radiation ? Give reason. defined & explained in the simplest way possible. Besides giving the explanation of Can we call human evolution as adaptive radiation ? Give reason., a detailed solution for Can we call human evolution as adaptive radiation ? Give reason. has been provided alongside types of Can we call human evolution as adaptive radiation ? Give reason. theory, EduRev gives you an ample number of questions to practice Can we call human evolution as adaptive radiation ? Give reason. tests, examples and also practice Class 12 tests.
Explore Courses for Class 12 exam
SaveJoin the Discussion on the App for FREE
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup