For his science fair experiment, Cole decided to determine how different types of surface material, affect how fast a matchbox car will go. He chose to use a tile floor, concrete patio and carpet. He
used the same car for each of the 20 trials. He measured the distances the car went after riding
down a 1-meter ramp.

What is Cole's test (independent) variable?

What is Cole's outcome (dependent) variable?

What must be kept constant (the same) for every trial?

What do you predict will happen and explain why.​

You need to make 500ml of 7h9(+) media with 1x adn and 30ug/ml of the antibiotic kanamycin. your stock solutions are 10x adn and 30mg/ml of kanamycin. the solvent is distilled water. how much of each component will you need to make the desired final solution?

The pelican's beak is adapted for in .

Imagine a person stepping on a pin and pulling his or her foot away. look at the reflex arc of this scenario below. which statement best describes the image? a)the sensory nerve carries the signal from the effector to the interneuron, and the motor neuron carries the signal to the receptor. b)the motor nerve carries the signal from the receptor to the interneuron, and the sensory neuron carries the signal to the effector. c)the sensory nerve carries the signal from the receptor to the interneuron, and the motor neuron carries the signal to the effector. d)the sensory nerve carries the signal from the receptor to the motor neuron, and the interneuron carries the signal to the effector.