Which statement is an example of a scientific theory?

a.
all living organisms are composed of one or more cells, which came from pre-existing cells.
b.
hummingbirds do not like the color white because they visit other colored flowers more often.
c.
the amount that caffeine affects a person's heart rate differs based on the person's age.
d.
the earth is the third planet from the sun and has one moon, which orbits the earth.

the backbone of the dna and rna compound is sugar phosphate.

the real answer is b. scintillation counter

a. suckling by young

b. hypothalamus

c. dopamine

d. trh

e. anterior pituitary

f. mammary glands

g. milk production

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.