Cathy conducts a scientific investigation. how can she make sure her results are valid?

Rue or false siblings look simila rbecause they each have some traits of their parents.

Nkentucky, intoxicating beverages (beer, whiskey, wine, etc.) are involved to some extent in approximately % of collisions fatal to pedestrians.

How does the color of light affect the germination time (amount time a plant takes to develop) of a radish seed?