Which is a scientific question? can cats learn to sit down on command? why do black cats bring bad luck? are spotted cats cuter than solid-colored cats? why are persian cats so funny?

Assume that a student is given two different models of bacteria, with one model consisting of big bacteria and the other consisting of small bacteria. how can the student demonstate the theory of endosymbiosis using the models

Which of the following best describes the purpose of technology?

Granite rock is light in color. which feature directly contributes to this color? the process that forms granite the amount of silica minerals in granite the shape of the grains found in granite the unique pattern formed by grains in granite