Circulatory -
Brings oxygen and nutrients where it is needed, removes toxic chemicals, maintains a stable body temperature
Digestive -
Food and nutrients are absorbed in the small intestine. These nutrients are necessary for other body systems to maintain homeostasis.
Excretory -
Removes all waste from the body, kidneys filter chemicals, liver filters toxins
Answer: I believe the answer is B - Nucled Acids.
Hope this helps.
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Nut is to shell as pea is to pod
The flower would have adapted to allow the hummingbird to better pollinate it. I believe this to be true because it follows the process of adaptation.
