871Every Day ScienceMedium
The variety of coal in which the deposit contains recognizable traces of the original plant material is____________?
A
MCQs
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C. peat
Explanation
peat is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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C. Reducing the surface tension of water
Explanation
Reducing the surface tension of water is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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A. Carbon
Explanation
Carbon is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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C. Greater wax moth
Explanation
The human ear can hear up to 20k hertz. While the Greater Wax Moth has the most extreme sense of hearing that can reach up to 300,000 kilohertz. These moth’s have evolved ultrasound-sensitive ears as a direct response to avoiding bats, their largest predator.
Correct answer
B. 1200 k Calories
Explanation
1200 k Calories is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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D. 5 – 21 days
Explanation
White blood cells are made inside the bone marrow and stored in your blood and lymphatic tissues. Because some white blood cells have a short lifespan of one to three days , your bone marrow is constantly making them. WBC have short life span of 5 – 21 days . The lymphocytes are developed in the lymph glands. after which time they are destroyed in the lymphatic system.White blood cells act as antibodies and provide strength to body’s immune system. WBC are also known as leucocytes. Difference Between RBC and WBC Red blood cells (RBC) 1. They do not have nucleus at maturity 2. They possess haemoglobin and are red 3. They help in transport of respiratory gases. 4. They are about 5 million/ mm 3 of blood. 5. Life span 120 days 6. In the embryonic stage the RBC are formed in the live and spleen. But after birth, they are formed in the red bone marrow. The process of formation of RBC is known as erythropoiesis . White blood cells (WBC) 1. They have a large characteristic nucleus 2. They are colourless as they have no pigment 3. They help in defence mechanism 4. They are about 7000/mm 3 of blood 5. WBC have short life span of 5-21 days 6. WBC are formed in the red bone marrow. The process of formation of WBC is known as leucopoiesis .
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C. Chronic Liver disease
Explanation
Chronic Liver disease is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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C. J
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J is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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D. Galileo
Explanation
Galileo is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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D. Too many platelets
Explanation
Too many platelets is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.