381. Gregor Mendel is the Father of Genetics.
382. The inert gas that is substituted for nitrogen in the air used by deep-sea divers for breathing is Helium.
383. The main and excessive part of plasma consists of Water.
384. The human heart has Four chambers.
385. An example of a gas having monoatomic molecules is Neon and argon.
386. Almost identical eclipses occur after 18 years and 11 days. This cycle is known as Saros Cycle.
387. Insects responsible for transmitting diseases are called Vectors.
388. Hysteria is not a contagious disease.
389. Jonas Salk discovered the Polio Vaccine.
390. If the level of atmospheric pollution increases, the length of the day will remain the same.
391. The aorta is connected to the Left ventricle of the heart.
392. Graphite is used as a lubricant.
393. The symbol of Iron is Fe.
394. The speed of sound in air is 1235 km/h.
395. Vitamin C is essential for Growth & repairing of tissues.
396. Long-sight defect could be corrected by using a Convex lens.
397. The most abundant element in the universe is Hydrogen.
398. When white light is passed through a prism, it splits into 7 colors.
399. In general, Comets have Highly elliptical orbits.
400. The bodyguard of the Earth is Jupiter that saves the Earth from many Comets and Asteroids.