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Ask QuestionPosted by Abhijeet Kumar 7 years, 2 months ago
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Meghna Thapar 5 years, 7 months ago
Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. During combustion, new chemical substances are created from the fuel and the oxidizer. These substances are called exhaust. Most of the exhaust comes from chemical combinations of the fuel and oxygen. Combustion reactions occur when oxygen reacts with another substance and gives off heat and light. Burning coal, methane gas, and sparklers are all common examples of combustion reactions. Essentially, any reaction that involves burning something is a combustion reaction.
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Meghna Thapar 5 years, 7 months ago
There, each vas deferens joins with a seminal vesicle and forms the ejaculatory duct. For ejaculation, sperm passes through the ejaculatory ducts to mix with fluid from the seminal vesicles, prostate, and other glands to form semen. The semen travels through the urethra and comes out the end of your *****. Frequent ejaculation will not cause the body to run out. Although it takes the average sperm about 74 days to fully mature, the body makes millions of sperm each day. Men with healthy, normal sperm counts should not worry about the effects of regular ejaculation.
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Meghna Thapar 5 years, 7 months ago
The lanthanide contraction is the greater-than-expected decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, which results in smaller than otherwise expected ionic radii for the subsequent elements starting with 72, hafnium. The Lanthanide Contraction is caused by a poor shielding effect of the 4f electrons. Gd because as atomic number increases, the atomic radius decreases. Yb because it has a larger atomic number.
Posted by Jasleen Dhanjal 7 years, 2 months ago
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Yogita Ingle 7 years, 1 month ago
Binary fission: It involves the longitudinal or transverse splitting of an organism into two equal halves which develop into two separate individuals.
• Binary fission is generally seen in unicellular organisms such as amoeba and paramecium falling into the category of protozoa. Amoeba is a simple, unicellular organism which reproduces by binary fission. The division begins with the division of nucleus.
• Binary fission can also be observed in multicellular animals like sea anemones and planarians.
Budding: This is a form of asexual reproduction which involves development of small mass of cells as protuberances on the parental body to give rise to new structures called as buds. These buds separate out from the parental body and develop into new individuals. Two types of budding are external budding and internal budding.
Cloning: It involves the creation of an exact copy of a biological entity.
• Cloning involves the process of forming a cell or a complete individual from a body cell.
• A clone is created by inserting the complete genetic material of a regular body cell from a donor into a recipient.
• Cloning is done in many animals including sheep, cattle, pigs etc. But for the first time cloning of sheep was successful in producing a clone of the parent sheep.
Posted by Prasad Umbarkar 7 years, 2 months ago
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Yogita Ingle 7 years, 2 months ago
Fertilization takes place in the fallopian tube. The copulation is timed such that the sperms reach the fallopian tube when ovum is still there and will then only be able to cause effective fertilization. Hence, all copulations do not result in pregnancy.
Posted by Abhishek Kesarwani 7 years, 2 months ago
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Yogita Ingle 7 years, 2 months ago
The science of farming is called agriculture. Farming includes cultivation of plants and rearing of animals for food and other beneficial items (like wool, cotton, beverages, etc.) is called agriculture. Agriculture is the main occupation of majority of people in India. Due to this, most of the people in India live in rural areas.
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Yogita Ingle 7 years, 2 months ago
In a cricket match, when a batsman hits a ball for a six, he applies a large force on the ball for a very short duration. Such large forces acting for a short time and producing a definite change in momentum are called “impulsive forces”.
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Meghna Thapar 5 years, 7 months ago
Magnitude simply means “how much”. In physics, we use many kinds of numbers, two of which are scalars and vectors. A scalar is a number that only has a magnitude or an amount. Magnitude is the quantitative value of seismic energy. It is a specific value having no relation with distance and direction of the epicentre. We can say that magnitude is the size of an earthquake. It is a logarithmic scale in which magnitude increases 10 times with each increase in number. For example: 6 bananas.
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