Which of these is the correct order through which oxygen enters the body?
a. blood, alveoli, lungs, bronchi, bronchioles
b. lungs, bronchi, bronchioles, blood, alveoli
c. bronchi, lungs, bronchioles, alveoli, blood
d. lungs, bronchi, bronchioles, alveoli, blood

Which macromolecules are polymers made of nucleotides (a) fatty acids (b) nucleic acids (c) carboxylic acids (d) amino acides

Nitrofurantoin used during the fifth week of pregnancy places the neonate at risk for which condition?

How does land development destroy ecosystems? it increases human carrying capacity too rapidly. it converts them into residential or agricultural areas. it forces humans to import non-native plants and animals. it expands the natural range of native wildlife species.