The answer is B.The respiratory system supplies the oxygen that the cardiovascular system transports to the different cells for the production of energy.
Volcanic mountains,
Let me know if i'm wrong.:)
Answer:
Autotrophs are the organisms which have ability make their own food using various sources of energy. Examples are can green plants and algae such as <em>Spirogyra, Chlorella, Volvox</em> make their food using sunlight carbon dioxide and water. they are photoautotrophs
Some bacteria are also make their food using chemical energy through oxidation. They are chemoautotrophs.
Answer:
the answer is B
Explanation:
because pangaea was a super continent
