Regulation of breathing depends upon brain receptors that detect changing blood levels of:
a. ATP
b. glucose
c. carbon dioxide
d. oxygen
The most successful of the invertebrate phyla with respect to numbers of species is:
a. Annelida
b. Arthropoda
c. Mollusca
d. Echnodermata
What substance does your body produce to block the pain caused by eating chili peppers?
Who is responsible for antibiotic resistance? Why?
2007-03-08 15:05:16 · 3 answers · asked by mustang_jenn2005 2 in Science & Mathematics ➔ Biology
Carbondioxide
Arthropoda
Mucus
Patients ,druggists and doctors
2007-03-08 15:11:04 · answer #1 · answered by J.SWAMY I ఇ జ స్వామి 7 · 1⤊ 0⤋
Way over my head. I'm a doctor, not a biologist.!
2007-03-08 15:14:23 · answer #2 · answered by Anonymous · 0⤊ 1⤋
i am NOT smarter than a 5th grader, & yet U persist with these questions
2007-03-08 15:22:56 · answer #3 · answered by carbazon 3 · 0⤊ 1⤋