Some studies has shown that peppermint odor increases people’s mental sharpness, especially when they solve math problems. which best describes how this could be a valid scientific claim?

a if it is tested in a controlled setting with repeated results
b if the test is published on wikipedia
c if the scientist was previously peer reviewed
d if the math problems are easy problems

The density of a planet is 0.69 g/cm3 (density of water is 1.0 g/cm3). which of the following planets might this be? a. mercury b. venus c. saturn d. mars

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.

Acontrol during an experiment. might change remains constant does not exist does change