Answer:
d.The wing-assisted incline running theory postulates that wings were initially used to maintain balance while climbing up slopes.
Explanation:
Two theories were given to explain the origin of avian flight. The top-down theory suggested that the birds' ancestors were tree dwelling species. They took help of wings to glide from tree to tree in order to avoid predator or catch prey. The bottom up theory suggested that the birds' ancestors were ground dwelling species. They took help of wings to maintain a balance and provide a lift for efficient running.
Wing-assisted incline running was a mixture of both the above theories and gave a balanced view point. According to it, birds' ancestors used wings to maintain a balance while running up inclined slopes. The wings helped them to save energy while scaling slopes and eventually a flight mechanism was also developed.
Hallucinogenic drugs are drugs such as LSD that produce hallucinations for its users. Another word that is used when referring to the drugs is "psychedelic",, which refers to these hallucinations. The word psychedelic refers to the hallucinations that these hallucinogenic drugs give.
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Material in the cell nucleus made up of DNA and various kinds of protein is called chromatin.
Answer:
200=x
Explanation:
In this equation,it shows 8x=1600 so you would bring the 8 under the x and leave the x and then put it under the 1600 to divide it like a fraction and get 200.I hope this helps:) Have a wonderful day!
