An "adaptation." It's the natural way that birds of flight adapt to their needs or environment which makes them more efficient.
Answer:
The most abundant gas in the atmosphere is nitrogen, with oxygen second, and argon as third.
Explanation:
The atmosphere contains many gases, most in small amounts, including some pollutants and greenhouse gases. The gases whose percentages do not change from day to day are nitrogen, oxygen and argon. Nitrogen accounts for 78% of the atmosphere, oxygen 21% and argon 0.9%. Usually, the 4 most abundant gases are:
Nitrogen (N2) - 78.084%
Oxygen (O2) - 20.9476%
Argon (Ar) - 0.934%
Carbon dioxide (CO2) 0.0314%
Answer:
Four
Explanation:
During spermatogenesis, some diploid spermatogonia become larger in size and transform into primary spermatocytes. These diploid primary spermatocytes enter meiosis to produce haploid spermatids. One primary spermatocyte enters meiosis-I and produces two secondary spermatocytes. These secondary spermatocytes are haploids. Each of these two secondary spermatocytes enters the meiosis-II and produces two haploid spermatids. In this way, one diploid primary spermatocyte produces four haploid spermatids.
The region where you might experiencing westerlies is :
The regions in western hemisphere
Because the earth rotate from the west to the east, the wind will move from east to west
hope this helps
