Respiration happens only with the presence of oxygen (Explain your answer) A) True
B) False

Give me the explanation
And also give me a real answer

What have we learned from fossil evidence about evolution? a) it is an abrupt change. b)the process is observable. c) it takes place during one lifetime only. d)the most complex traits are always selected.

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.