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Ask QuestionPosted by Deepak Agrawal 6 years, 9 months ago
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Yogita Ingle 6 years, 9 months ago
The destructive energy of an earthquake is measured on Richter scale. An earthquake which measures 3 on this scale would be recorded by a seismograph. An earthquake of this intensity is not likely to cause any damage.
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Meghna Thapar 5 years, 6 months ago
As with most bird species, roosters and hens don't have external genitalia. Instead both partners procreate using an external orifice called a cloaca. When the cloacae are touched together, sperm is transferred into the female reproductive tract. The reproductive system of a female chicken, or hen, like the reproductive systems of female mammals, contains two ovaries and two oviducts. However, the right ovary and oviduct do not fully develop and do not function. The left ovary and oviduct produce eggs. The ova, produced in the ovary, develop into egg yolks.
Posted by Kajal Pahwa 6 years, 9 months ago
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Yogita Ingle 6 years, 9 months ago
The outer ear is called pinna. It collects the sound from the surroundings. The collected sound passes through the auditory canal, there is a thin membrane called eardrum. When a compression of the medium reaches the eardrum, the pressure on the outside of the membrane increases and forces the eardrum inward. Similarly, the eardrum moves outward where a rarefaction reaches it. In this way eardrum vibrates.
The vidrations are amplified several times by three bones in middle ear. The middle ear transmits the amplified pressure variations receievd from the sound wave to the inner ear, the pressure variations are turned into electrical signals by the cochlea.
These electrical signals are sent to the brain via the auditory nerve and the brain interprets them as sound.
Posted by Kajal Pahwa 6 years, 9 months ago
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Yogita Ingle 6 years, 9 months ago
The sequence in which nitrogen in the atmosphere is passed into the soil and life forms, and then released back into the atmosphere, is called the nitrogen cycle.
a) Nitrogen is introduced to the soil by fertilizers or animal and plant residues. Bacteria in the soil convert the nitrogen to ammonium and nitrate, which is taken up by the plants by a process of nitrogen fixation.
b) Ammonification: The process of the production of ammonia from organic compounds is called ammonification. Ammonification is the process — carried out by a variety of microorganisms — that breaks down proteins, amino acids, and other nitrogen-containing compounds in dead and waste organic matter to form ammonia.
c) Nitrification: It is the process by which ammonia is converted to nitrites (NO2-) and then to nitrates (NO3-). This process naturally occurs in the environment, where it is carried out by specialized bacteria.
d) Denitrification: It is the biological conversion of nitrate to nitrogen gas, nitric oxide or nitrous oxide. These compounds are gaseous compounds and are not readily available for microbial growth; therefore they are typically released to the atmosphere. Nitrogen gas makes up over 78% of atmospheric gases, thus the release of N2 to the atmosphere is benign.
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Meghna Thapar 5 years, 6 months ago
A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere. Plate size can vary greatly, from a few hundred to thousands of kilometers across; the Pacific and Antarctic Plates are among the largest. The seven major plates are the African plate, Antarctic plate, Eurasian plate, Indo-Australian plate, North American plate, Pacific plate and South American plate.
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Yogita Ingle 6 years, 9 months ago
Lightning is observed as a bright streak of light during a thunderstorm. Lightning is always accompanied by the sound of thunder. The transfer of charge from clouds to the earth or from cloud to cloud is called lightning. In simple words; lightning is an electric spark which happens on a grand scale in the sky.
Mechanism of Lightning
- During a thunderstorm, the air currents move upward and water droplets move downward. These movements take at very fast pace and it results in separation of charges in the clouds.
- The positive charges accumulate at the upper edges of the clouds and the negative charges accumulate at the lower edges of the clouds. Scientists are yet to understand the exact reason for this.
- At the same time, the ground becomes positively charged.
Saloni Pant 6 years, 9 months ago
Posted by Yash Pawar 6 years, 9 months ago
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Meghna Thapar 5 years, 10 months ago
A planet is a celestial body that is in orbit around the Sun and has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape. However, asteroids are small bodies smaller than planets and mostly irregular shape orbiting Sun.
Posted by Vishal Belwal 6 years, 9 months ago
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Meghna Thapar 5 years, 10 months ago
Earth’s has a mean radius of 6,371 km (3,958.8 mi), and a mass of 5.97 × 1024 kg, whereas Jupiter has a mean radius of 69,911 ± 6 km (43441 mi) and a mass of 1.8986×1027 kg. In short, Jupiter is almost 11 times the size of Earth, and just under 318 times as massive.
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Yogita Ingle 6 years, 9 months ago
On September 28, 1928, Scottish scientist Alexander Fleming discovered penicillin, now one of the world's leading antibiotic medications. Penicillin is an antibiotic; it kills disease-causing bacteria. The invention of penicillin was a milestone in the practice of medicine. It changed the way doctors treated diseases.
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Gaurav Seth 6 years, 9 months ago
Functions of the Parts of Human Eye
Sclera
Protects and contains internal parts
Cornea
Cornea is responsible for maximum refraction of incident light
Aqueous Humour
Prevents collapse of the eye due to atmospheric pressure changes
Iris
Iris controls the light entering the eye by adjusting the size of pupil
Crystalline Lens
Focuses the light reflected by objects on the retina.
Ciliary Muscles
Alter focal length of the crystalline lens
Retina
Receives optical image and converts it to electrical impulses
Vitreous Humour
Maintains the shape of the eye
Optic Nerve
Carries electrical impulses to the brain. Brain interprets these impulses and produces the sense of vision.
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Yogita Ingle 6 years, 9 months ago
Pulses are a kind of leguminous plants. These plants occur in symbiotic relationship with Rhizobia which form root nodules. Atmospheric nitrogen fixation occurs in these root nodules which result in increasing the fertility of soil by adding nitrogen to the soil. So, such plants are grown on fields in between other plants to restore fertility of soil.
Posted by Kap Sharma 6 years, 9 months ago
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Yogita Ingle 6 years, 9 months ago
Mars is red because it contains a large amount of iron in its crust. On Mars, the reverse effect takes place. The dust in the atmosphere scatters the red particles of light, makes the sky also appear red.
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@ Mvn 6 years, 9 months ago
1Thank You