Which of the following traits has occurred as a result of natural selection? Over time, raccoons learn to get food from garbage cans.

Over time, a person increases muscle mass with exercise.

Over time, honey suckle flowers developed a sweet smell to attract pollinators.

Over time, corn plants are bred to make larger corn cobs and kernels.

Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

70 give a real life example showing how sensory neurons work with the motor neurons