What did primitive anaerobic prokaryotic cells did not contain

*will mark brainliest to the first and correct answer less species diversity results in less a. oxygen b. food c. drinkable water d. all of the above

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing