Some people have the ability to roll their tongue (rollers) while other people cannot roll their tongues (non-rollers) .An investigation was conducted to how many learners in Grade 10-12 could roll their tongues . formulate a hypothesis? please help ​

Dr. kaylan is an ecologist who studies bird behavior. she sets up an experiment to test which type of food crows are most likely to eat when given a choice between walnuts, corn, and sunflower seeds. to perform her experiment, dr. kaylan places three food bins in an area frequented by cows. each bin contains one of the three food types. then, she measures how much of each food type is eaten every day for a month and summarizes the results of her experiment in the pie chart below. based on her results, dr. kaylan concludes that crows choose to eat corn more frequently than other food sources because it has a higher nutritional value. what is a reasonable alternate conclusion that can be drawn from dr. kaylan's data

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat

A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?