Explanation:
Evaporation - the water from the oceans began to evaporate due to the heat of the sun and forms water vapour
Condensation - the vapour then rises and forms clouds and forms a liqiud
Presipitation - after the cloud is filled with water, it falls down as rain
Answer:
23
Explanation:
At the end of meiosis-I, two daughter cells are formed having half the number of chromosomes present in diploid cell undergoing meiosis. Each cell has half the number of chromosomes present in the diploid cell.
Penicillin is an antibiotic produced by a fungus.
Explanation:
The only true statement from the given options is that penicillin is an antibiotic produced by a fungus. It is used to treat a wide range of microbial infection.
- Penicillin was discovered by Alexander Fleming in 1928
- Penicilium is a fungi mold grown by fermentation.
- The antibiotics restrict the activities of enzymes by inhibiting them.
- Antibiotics are not usually effective against virus
- Antimicrobial chemicals are usually toxic to humans.
- Antibiotic resistance is a serious problem in the health industry.
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Answer:
The answer is B) Beringia
Explanation:
The Bering land bridge is a postulated route of human migration to the Americas from Asia about 20,000 years ago. An open corridor through the ice-covered North American Arctic was too barren to support human migrations before around 12,600 BP.
