According to the theory of evolution, birds' feathers evolved from "reptile scales"--specifically the scales of dinosaurs if one search far enough back in time, which seems counterintuitive because scales are so hard.
Answer:
1 a 2 b 3 b
Explanation:
i answered the same questions and got the answers right
The 2 main gasses which are found in the earth's atmosphere are C. Carbon dioxide and Oxygen.
Oil reserves are the amount of technically and economically recoverable oil. Reserves may be for a well, for a reservoir, for a field, for a nation, or for the world. Different classifications of reserves are related to their degree of certainty.
The total estimated amount of oil in an oil reservoir, including both producible and non-producible oil, is called oil in place. However, because of reservoir characteristics and limitations in petroleum extraction technologies, only a fraction of this oil can be brought to the surface, and it is only this producible fraction that is considered to be reserves. The ratio of reserves to the total amount of oil in a particular reservoir is called the recovery factor. Determining a recovery factor for a given field depends on several features of the operation, including method of oil recovery used and technological developments.[1]
Answer: I am pretty sure that it is A
Hope this helps!
Explanation:
