Give three reason for lose of energy from one trophic level to another in food chain?

Who was the first scientist to measure speed as distance over time?

While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight