7. What do you mean by atmospheric pressure?
8. Rabi crops are planted in
(a) June (b) November (c) January (d) April
9. Polymers are made up of many
(a) Smaller units (b) larger units ( few units (d) all of th
10. What is ploughing?
11. What is 4R principle?
12. What is called thermoplastic?
13.What is sowing?
14. What is manure?
15.Cholera is caused by
16. The following is an antibiotic
a) Sodium bicarbonate (b) Streptomycin (c) Alcohol (d) Yea
17. Hepatitis A is caused by bacteria. (True False)
18. Who discovered cell?
19. What are unicellular organisms?
20. What is tissue ?
Answers
Answer:
This to more time please single questions and this may take mare than 5000 words according to me. so, l request you to ask single question.
Hope you understand.
Answer:
✌️✌️
Explanation:
1. the pressure exerted by the weight of the atmosphere, which at sea level has a mean value of 101,325 pascals (roughly 14.6959 pounds per square inch).
2. November
3.large units
4.A plough or plow is a farm tool for loosening or turning the soil before sowing seed or planting. Ploughs were traditionally drawn by oxen and horses, but in modern farms are drawn by tractors. A plough may have a wooden, iron or steel frame, with a blade attached to cut and loosen the soil.
5.The 4R means Reduce, Reuse, Recycle and Restore. (iv) Recovery: If the waste remains after it is been reused and recycled, we can use it to generate energy at our waste-energy (EfW) plant.
6.Thermoplastics are defined as polymers that can be melted and recast almost indefinitely. They are molten when heated and harden upon cooling. When frozen, however, a thermoplastic becomes glass-like and subject to fracture.
7.Sowing is the process of planting. An area or object that has had seeds planted in it will be described as a sowed area.
8.Manure is organic matter that is used as organic fertilizer in agriculture. Most manure consists of animal feces; other sources include compost and green manure.
9.A bacterium called Vibrio cholerae causes cholera infection. The deadly effects of the disease are the result of a toxin the bacteria produces in the small intestine. The toxin causes the body to secrete enormous amounts of water, leading to diarrhea and a rapid loss of fluids and salts (electrolytes).
10.True
11.Interested in learning more about the microscopic world, scientist Robert Hooke improved the design of the existing compound microscope in 1665. His microscope used three lenses and a stage light, which illuminated and enlarged the specimens.
12.A unicellular organism, also known as a single-celled organism, is an organism that consists of a single cell, unlike a multicellular organism that consists of multiple cells. Unicellular organisms fall into two general categories: prokaryotic organisms and eukaryotic organisms.