Answer: D, lunar are 29.5 days, calendar are 28 to 31 days
Explanation: 1. average lunar month lasts 29.530575 days or 29 days, 12 hours, 44 minutes, and 2 seconds, a few days short of a calendar month. The orientation of the illuminated side of the Moon in the Northern Hemisphere. A lunar month is the time it takes the Moon to go through all its phases.
The bald eagle and the black bear are tetrapods, which means that they both have four limbs along with the digits. This shows that they both are the descendants of the four-limbed ancestors. However, the limbs of the bear and the bald eagle have different functions. The forelimbs of both these organisms serves different purpose. Hence, their limbs are homologous organs. The homologous organs are those which have the same ancestry but the functions are different.