In order to know how fluid the magma was, the researchers needed to measure the .
a. temperature
b. weight
c. fissure
d. viscosity
(20 points)

D) Viscosity

Explanation:

Viscosity is the measure of fluidity.

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.