Are there any parts of the human body that get oxygen directly from the air and not from the blood? A. Yes
B. No
C. Neither​

Which plains area lies in both the united states and canada? altiplano central canadian shield coastal plains great plains

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.

Using meiosis, the sporophyte produces spores that are .