Which type of transport do oxygen and carbon dioxide use to cross the cell membrane?

Organisms are classified, or grouped into categories, based on similarities in their characteristics and/or evolutionary relationships. the study of how organisms are classified is known as

In what for do plants utilize nitrogen? why do they need nitrogen?

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