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Ask QuestionPosted by Satyam Lodhi Rajput 5 years, 3 months ago
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Akshita Akshita 5 years, 3 months ago
Posted by Satyam Lodhi Rajput 5 years, 3 months ago
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Meghna Thapar 5 years, 2 months ago
In humans, implantation is the stage of pregnancy at which the embryo adheres to the wall of the uterus. At this stage of prenatal development, the conceptus is called a blastocyst. It is by this adhesion that the embryo receives oxygen and nutrients from the mother to be able to grow. Implantation is a process in which a developing embryo, moving as a blastocyst through a uterus, makes contact with the uterine wall and remains attached to it until birth. If the zygote implants in any area besides the uterus, the result is an ectopic pregnancy.
Posted by Satyam Lodhi Rajput 5 years, 3 months ago
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Posted by Zara Khan 5 years, 3 months ago
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Satender Sharma Kush 5 years, 3 months ago
Md Affan 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Corrosion is the eating away of metals by the action of air, water, acids present on its surface. Corrosion requires presence of air and water.
Posted by Rajneesh Payal 5 years, 3 months ago
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Meghna Thapar 5 years, 1 month ago
The prevention of pregnancy in women (by preventing fertilisation) is called contraception. There are four methods of contraception:
- Barrier method: In barrier method of contraception, the physical devices such as condoms are used by males and females.
- Chemical method: In chemical methods of preventing pregnancy, the females use two types of pills – oral pills and vaginal pills.
- Intra-Uterine Contraceptive Devices – The use of intra-uterine contraceptive devices like Copper-T is very effective in preventing pregnancy. A Copper-T is placed inside the uterus by a doctor to prevent unwanted pregnancies.
- Surgical method: These methods are available for males as well as for females. Vasectomy is done in males and tubectomy is done in females.
- Vasectomy - In males, a small portion of the sperm duct (Vasdeferens) is removed by surgical operation and both the cut ends are ligated properly. This prevents the sperms from coming out.
- Tubectomy - In females, a small portion of the oviducts is removed by surgical operation and the cut ends are ligated. This prevents the ovum from entering into the oviducts.
Posted by Khushi Anurag 5 years, 3 months ago
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सरिफ विद्यार्थी 5 years, 3 months ago
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Malaika Sharma 5 years, 3 months ago
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Shubham Saxena ???? 5 years, 3 months ago
Malaika Sharma 5 years, 3 months ago
Posted by Shagun Chaudhary 5 years, 3 months ago
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Posted by Shagun Chaudhary 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
The passage states that energy comes from the sun in the form of light (one kind) and is then converted into different kinds of energy. So, we can conclude that the chief source of energy is the Sun.
Posted by Sharma G 5 years, 3 months ago
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Meghna Thapar 5 years, 1 month ago
The quantitative expression for the effect of these three variables on electric force is known as Coulomb's law. Coulomb's law states that the electrical force between two charged objects is directly proportional to the product of the quantity of charge on the objects and inversely proportional to the square of the separation distance between the two objects.
where Q1 represents the quantity of charge on object 1 (in Coulombs), Q2 represents the quantity of charge on object 2 (in Coulombs), and d represents the distance of separation between the two objects (in meters). The symbol k is a proportionality constant known as the Coulomb's law constant. The value of this constant is dependent upon the medium that the charged objects are immersed in. In the case of air, the value is approximately 9.0 x 109 N • m2 / C2. If the charged objects are present in water, the value of k can be reduced by as much as a factor of 80. It is worthwhile to point out that the units on k are such that when substituted into the equation the units on charge (Coulombs) and the units on distance (meters) will be canceled, leaving a Newton as the unit of force.
Posted by Mudit Uppal 5 years, 3 months ago
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Posted by Shalem Raja 5 years, 3 months ago
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Shreya . 5 years, 3 months ago
Posted by Account Deleted 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Lightning is due to the discharge of two static unlikely charged clouds when they come close to each other.
Posted by Prabhat Kumar 5 years, 3 months ago
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Shreya . 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
A nephron is the basic structural and functional unit of the kidney. They are the microscopic structure composed of a renal corpuscle and a renal tubule. The word nephron is derived from the Greek word – nephros, meaning kidney. There are about millions of nephrons in each human kidney
Posted by Diya Arya 5 years, 3 months ago
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Ruhit Sonar 5 years, 3 months ago
Posted by Tapish Sharma 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Structural formula and electron dot structure of propane.
- Propane is a hydrocarbon that is composed of carbon and hydrogen atoms.
- To draw the structural formula as well as the electron dot structure of propane, its structural formula is needed. The structural formula of propane is
.
- As valence electrons are used to draw the electron dot structure, the number of valence electrons of propane must be identified. Accordingly, propane has 20 valence electrons.
- As Carbon atom is present in less, it is determined as the center atom.
- The valence electron must be denoted in such a way that all the elements present in the compound have attained octet (in case of hydrogen it is duet).
- For the structure of propane refer the attachment
Posted by Aaditya Chunekar 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Parturition means childbirth. It is also known as labour. It is the mechanism of signalling the onset of labour (or) a procedure of delivering a child after the completion of pregnancy period. The developed child is born with the release of cortisol.
During parturition process, the cervix dilates and relaxes. Along with cortisol, oxytocin and estrogen hormones are released to begin the milk production and labour.
Posted by Prothom Bose 5 years, 3 months ago
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Meghna Thapar 5 years, 1 month ago
In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. More reactive metals have a greater tendency to lose electrons and form positive ions . In terms of optical properties, metals are shiny and lustrous. ... The transition metals (such as iron, copper, zinc, and nickel) are slower to oxidize because they form a passive layer of oxide that protects the interior. Others, like palladium, platinum and gold do not react with the atmosphere at all.
Posted by Dhrangi Prakash 12 5 years, 3 months ago
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Shruti Janghu 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Biotic factors relate to all the living things in the ecosystem. Their presence and their biological by-products affect the composition of an ecosystem. Biotic factors refer to all living organisms from animals and humans, to plants, fungi, and bacteria. The interactions between various biotic factors are necessary for the reproduction of each species and to fulfil essential requirements like food, etc.
Examples of Biotic Factors
Examples of biotic resources include all the living components present in an ecosystem. These include producers, consumers, decomposers and detritivores.
Roshan .R 5 years, 3 months ago
Posted by Akshat Chaudhary 5 years, 3 months ago
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Roshan .R 5 years, 3 months ago
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Shubham Saxena ???? 5 years, 3 months ago
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