Tina is conducting an investigation on bicycle helmet aerodynamics. she is trying to find out what kind of helmet causes the least amount of air resistance. she tested three different helmets, using the same rider each time. she recorded the time it took for the rider to complete one circuit on a track in the table below. helmet time in seconds a 35 b 28 c 41 how could tina get more reliable data for this experiment?

There is a liquid capsule inside a cup full of liquid. the cup full of liquid has salt in it and the liquid capsule has no salt in it. in which direction will the solvent flow? a. the salt does not have to move b. from the capsule to the larger cup c. equally between the capsule and the cup d. from the larger cup to the capsule

What must be done to breed dogs for a partical trait

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.