Which statement is a good hypothesis 1) crest is the best toothpaste. 2) Pantene shampoo works so good. 3) I love Oreos. 4) fabreeze neutralizes air odor for 12 hours

4) Fabreeze neutralizes air odor for 12 hours

Explanation: This hypothesis is sweet and short and to the point but also very concise in that it states that Fabreeze will neutralize air odor, and for the duration of 12 hours. This is a testable hypothesis with a testable variable, how long the odor is neutralized making this the best hypothesis in this list.

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.