Answer:
Sound
Explanation:
A mechanical wave can not transmit its energy vacuum.
Answer:
TTC UCC TUG CUT
Explanation:
A flips to T (remember apple goes with tree) howverm in an RNA sequence or complemntary DNA sequence, T become U and U becomes T.
C flips to G and G flips to C (remember car goes with garage)
Jet Streams: are fast flowing air currents that occur in the atmosphere of Earth and other planets.
Global wind belts: Are formed by the Earth's spin and the unequal heating of the Earth by sunlight.
Answer: Over 4 billion years ago
Explanation: The chemical reactions between carbon and water is said to bring about life according to scientists. These reactions builds largely upon four families of chemicals (lipids, carbohydrates, amino acids, and nucleic acids).
However, the actual time of life on Earth has varying speculations from different scientists in fields of study (such as molecular biology, chemistry, oceanography, etc).
Furthermore, microfossils within hydrothermal-vent precipitates dated from 3.77 to 4.28 billion years is presumed to inhabit the oldest record of life on Earth. Hence, which is presumed to have occurred after ocean formation 4.4billion years ago.
Thus, the actual date of the chemical reactions that brought about life is not rigid, but presumed to have occurred over 4billion years ago (according to research).
