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Ask QuestionPosted by Palak Chaudhary 5 years, 3 months ago
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Posted by Xoxo .. 5 years, 3 months ago
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Aditya Markam 5 years, 3 months ago
Anil Patnaik 5 years, 3 months ago
Sukhman Kaur 5 years, 3 months ago
Gaurav Seth 5 years, 3 months ago
Crop is a plant of the same kind that is grown on a large scale to get useful products and to meet nutritional needs in an area by man. For example, all the plants of wheat grown in a field are called wheat crop. Similarly, all the plants of rice grown in a field are called rice crop.
The plants which are grown at home or on small scale of area are not said to be crops.
Posted by Yogi Singh 5 years, 3 months ago
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Gaurav Seth 5 years, 3 months ago
An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur. It has a double membrane, the inner part being folded inwards to form layers (cristae).
Mitochondria are known as the powerhouses of the cell. They are organelles that act like a digestive system which takes in nutrients, breaks them down, and creates energy rich molecules for the cell. The biochemical processes of the cell are known as cellular respiration.
Posted by Vice Versa 5 years, 3 months ago
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Atavistic Hero 5 years, 3 months ago
Posted by R Maruthamani 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Matter is everything around you. Atoms and compounds are all made of very small parts of matter. Those atoms go on to build the things you see and touch every day. Matter is defined as anything that has mass and takes up space (it has volume).
Posted by P Y 5 years, 3 months ago
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Gaurav Seth 5 years, 3 months ago
| Biodegradable waste | Non-biodegradable waste |
| Those which can be easily degraded by the decomposers into substances that go into soil and are harmless to the environment. | Those which cannot be degraded by the decomposers and thus remain in the environment causing pollution. |
| They are natural wastes. | They are non-natural wastes. |
| Examples- vegetables wastes, animal excreta | Examples- plastic, polythene |
Posted by Raju Devkinandan Sharma 5 years, 3 months ago
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Gaurav Seth 5 years, 3 months ago
Acrylic is the name of the synthetic fiber that works like wool.
Explanation:
Wool is an example of natural fiber which is obtained from sheep or yak. It is used in the manufacturing of woolen cloth which is used during winter and cold season.
Acrylic is a synthetic fiber which resembles wool in its function and its structure. It is cheap and highly durable than natural fiber wool. This also prevents shearing process done in Sheeps.
Posted by Dipesh Gupta 5 years, 3 months ago
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Posted by Dipesh Gupta 5 years, 3 months ago
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Meghna Thapar 5 years, 2 months ago
If a fertilizer is completely water-soluble, it will remain in the soil only as long as the soil is reasonably dry. But if it rains, the water will dissolve the fertilizer quickly, and some will flow away with the water, especially if the soil is porous. Depending on the amount of fertilizer consumed, it may cause disturbances of the kidneys, lungs and liver and even cause cancer. This is due to the toxic metals that fertilizers have. Fertilizers remove the nutrients of the soil, damaging the soil and the local environment.
Posted by Raj Kapur 5 years, 3 months ago
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Meghna Thapar 5 years, 3 months ago
Cells are the basic units of life. All living things (plants and animals) are made up of cells. They have different shapes and sizes for different organisms. Most of the cells are very small and cannot be seen with naked eye. They can only be seen with the help of a microscope.
Cells in the living organisms are complex living structures unlike non-living bricks. The egg of a hen represents a single cell and is big enough to be seen by the unaided eye.
Posted by Ashish Kumar 5 years, 3 months ago
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Sukhman Kaur 5 years, 3 months ago
Meghna Thapar 5 years, 3 months ago
The process by which huge rocks are broken down into small particles by the action of sun’s heat, wind, rain and flowing river water etc. is called weathering. Soil is formed from rocks by the process of weathering. In this process rocks are broken down very slowly by the action of sun’s heat, wind, rain, flowing river water etc. to form tiny particles. These tiny rock particles then mix up with humus to form fertile soil. It is called weathering because the rocks are worn away to form small particles by long exposure to the elements of weather. Weathering of rocks is very very slow process. It takes thousands of years to weather huge rocks into fine particles fit to make soil.
Posted by Harendra Rajawat 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Sowing is the process of addition of seeds into the soil. Seeds are sown in the field by hand or by using seed drill. There are traditional seed drills as well as modern seed drills.
Posted by Sakshi Yadav 5 years, 3 months ago
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Arpit Ojha 5 years, 3 months ago
Gaurav Seth 5 years, 3 months ago
Manure is an organic substance that increases soil fertility. It is prepared from decomposition of animal excreta & plant wastes. It consists of Organic matter and nutrients essential for the plant.
Posted by Rajeev Kumar 5 years, 3 months ago
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Navya Raghuvanshi Navya Raghuvanshi 5 years, 3 months ago
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Posted by Vivek Kumar 5 years, 3 months ago
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Meghna Thapar 5 years, 3 months ago
Cropping patterns:
These are models of raising crops which help in obtaining maximum benefit from the same piece of land, reduce risk of crop failure, disease and infestation. Some of the common types of cropping patterns are:
a. Mixed cropping:
Mixed cropping is growing two or more crops simultaneously on the same piece of land, for example, wheat + gram, or wheat + mustard, or groundnut + sunflower.
b. Intercropping:
Inter-cropping is growing two or more crops simultaneously on the same field in a definite pattern. A few rows of one crop alternate with a few rows of a second crop, for example, soyabean + maize, or finger millet (bajra) + cowpea (lobia). The crops are selected such that their nutrient requirements are different.
Posted by Yash Garg 5 years, 3 months ago
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Manisha Lalchandani 5 years, 3 months ago
Ritik Varshney 5 years, 3 months ago
Rucha Banerkar 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Coal was formed by the decomposition of large land plants and trees buried under the Earth about 300 million years ago.About 300 million years ago, the Earth had dense forests in the low lying wet areas.Due to natural calamities like earthquakes, volcanoes, floods, etc. these forests got buried under the surface of the Earth.As more soil got deposited on them, they were compressed.As a result, the temperature also rose as they sank deeper and deeper.Due to high pressure and temperature and the absence of air, the wood of the buried forest plants and trees slowly got converted into coal.The slow process by which the dead plants buried under the Earth have become coal is called as carbonisation. Since coal was formed from the remains of the plants, it is called a fossil fuel.Coal, which is mainly carbon, on heating produces mainly carbon dioxide gas and a lot of heat energy.
Posted by Koyel Saha 5 years, 3 months ago
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Meghna Thapar 5 years, 3 months ago
Even 10x or 25x magnification is usually enough to see some of the tiny life forms living in the water. Step 1: Use the eyedropper to get some water from one of your samples. Place 1 drop of water on the microscope slide and place it under the microscope to examine it. Any drop of untreated water, from a lake, a river, or the ocean, is a world in miniature. The drop can contain thousands of tiny organisms, such as algae, protozoans, bacteria, and viruses.
Posted by Annu Yadav 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Farmers use many ways to remove weeds and control their growth.
Tilling before sowing of crops helps in uprooting and killing weeds, which may then dry up and get mixed with the soil. The best time for the removal of weeds is before they produce flowers and seeds.
The following tools may be installed
i. Khurpi - The Khurpi is used to remove of weeds by uprooting or cutting them from time to time.
ii. Seed Drill - A seed drill is also used to uproot weeds.
iii. Weedicides - Weeds are also controlled by using weedicides.
Narendra Kumar Pandey 5 years, 3 months ago
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Meghna Thapar 5 years, 3 months ago
one pesticide used to kill insects and harm crops is DDT, on the other DDT atrazine is a pesticide as well as it is also used to kill the insect which harms our crop. Pesticides are poisons and, unfortunately, they can harm more than just the “pests” at which they are targeted. They are toxic, and exposure to pesticides can cause a number of health effects. They are linked to a range of serious illnesses and diseases from respiratory problems to cancer.
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