What quantity is shown by the slope?
the mass of a fluid
the volume of a fluid
the weight of a fluid
the density of a fluid

answer: c.

explanation:

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

: )

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.