What type of barrier led to reproductive isolation of the two tree frogs 1)behavioral 2) temporal 3)habitat 4)unable to determine .choose the correct answer

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

answerthe capacity to preform work;