Answer:
11.Damaged seeds would float on top of water.
12.Cholera is an acute diarrheal illness caused by infection of the intestine with Vibrio cholerae bacteria. People can get sick when they swallow food or water contaminated with cholera bacteria. The infection is often mild or without symptoms, but can sometimes be severe and life-threatening.-i dunno which one :/
13.Like synthetic fibres, plastic is also a polymer .
14.Metals react with acid to give hydrogen gas and form metal salts.
15.Fire produced by oil cannot be controlled by water.
16.Migratory birds fly to far away places because of climatic changes.
17.prokaryotic cells
18.The period for a simple pendulum does not depend on the mass or the initial anglular displacement, but depends only on the length L of the string and the value of the gravitational field strength g, according to The mpeg movie at left (39.5 kB) shows two pendula, with different lengths.- dunno which one.
19.In dim light, your pupil expands to allow more light to enter your eye. In bright light, it contracts. Your pupil can range in diameter from 1/16 inch (1.5 mm) to more than 1/3 inch (8 mm). Light detected by the retina of your eye is converted to nerve impulses that travel down the optic nerve- dunno too.
20.Shrillness of a sound is determined by the frequency of vibration.
Step-by-step explanation:
Hope it helps! Btw/by the way, just pick or read the 12,18,19 and pick your asnwer
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