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

B. All living organisms are composed of one or more cells, which came from pre-existing cells.

Explanation:

Scientific theory is given as an answer to a natural happening in the earth but scientific laws are detailed idea of how nature will act under certain conditions.

Theories are given after an experiment has been performed under controlled conditions. Scientific theory cannot be changed to scientific laws and scientific laws cannot be changed to scientific theory.

Scientific theories are broader in scope, and give overall clarifications of how nature functions and why it shows certain attributes. Similarly, all cells comes from pre-existing cells is an example of cell theory.

chromosomes carry the genetic information for organisms. also, chromatin is the thread like dna which is located in the nucleus of an organism.

it marks things for degradation via the proteasome. it alters there celluar location.