Determine the kinetic energy of a I,500-kg roller coaster that is moving with a speed of 15.0 m/s.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.

genetic variations are caused by mutations which are random in the population