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Explain Internal Defence Mechanism
Body's internal defence mechanism is carried out by white blood corpuscles (WBCs), macrophages, inflammatory reactions, fever, interferons, complement system and natural killer cells, as you may recall reading earlier. All of them together check the damage caused by pathogens. The host usually recovers from such invasions. Let us learn about these internal defence mechanisms, in greater details starting with the WBCs.
Some Physical Features of the Atmosphere: i) The atmosphere is a mixture of gases. It is made up of 78.08% nitrogen; 21% oxygen by volume. There is only 0.03% of carbon dioxi
A weather picture A piece of white blotting paper is immersed in a solution having two parts cobalt chloride to one part common salt. While wet the paper will stay pink, but wh
nervous system assignments
Oxidising Substances : It includes oxidising substances and the organic peroxides. Oxidising substances are by themselves not combustible but by feeding oxygen to other substances
Name of the metamorphic rock: gneiss
Define Hypoparathyroidism Hypoparathyroidism or a decrease in the secretion of parathormone causes an upset in calcium metabolism. Hypocalcemia develops and the muscles go into
1.) Imagine that you are a particle inside an ice cube. You were placed into a glass of lemonade to cool it down. The lemonade has now been drunk and you have been left in the glas
In Fehling's Test The free sugar group (aldehyde or ketone) reduces the Cu (cupric) ions in an alkaline environment to form Cu 10 (cuprous oxide) and the sugar is itself ox
What is ablation? Ans) Ablation is a technological term for the loss of snow and ice from a glacier. The process happens by a combination of the two physical processes, meltin
Observing the phases of the moon Over the time of a lunar month have the children make nightly observations and illustrate drawings of the moon. Start at new moon and continue
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