It andrew is staying in a primary sector economy, then which of these could be an important occupation in andrew's country?

In which of the following ways is the function of the surface of a microsphere similar to the function of an actual cell membrane? a. both make it possible for the conditions in the interior to be different from the conditions outside. b. both provide a barrier that keeps water from flowing across it so the interior remains dry. c. both separate the rna that forms in the interior from any rna that might form in the environment. d. both can actively move molecules into the interior or out into the surrounding environment.

What are some possible short and long term medical concerns for crew members on longer space exploration trips

The galapagos island contain 13 species of finches four of the species are seen here it is believed that all of the species had one common ancestor and overtime