In refraction, when a wave travels from one medium to another it changes speed.
Correct option is A.
Bacteria( cholera)
Virus( AIDS)
Fungi(athlete's foot)
Protist( malaria)
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Answer:
It is equal to the overall momentum before collision, so far no external object is involved.
Explanation:
Momentum is always conserved during collision as a rule. This is equal to the product of the mass and velocity. Thank you.
Pretty sure that it is 0.
C explanation: There are many examples of fossils found on separate continents and nowhere else, suggesting the continents were once joined. If Continental Drift had not occurred, the alternative explanations would be: They swam to the other continent/s in breeding pairs to establish a second population. ...
