The odometer of the car reads 2000 km at the start of the trip and 2400 km at the end of the trip. If the trip took 8 h, calculate the average speed of the car in kmh−1 and ms−1. A. 50 km/h or 13.9 m/s B. 40 km/h or 12.5 m/s C. 50 km/h or 12.5 m/s D. 40 km/h or 13.9 m/s

What type of questions asked from the lesson of magnetic effect of electric current 

Wavelength of green light is

A) 400-450 nm

B) 500-550 nm

C) 660-720 nm

D) 720-800 nm

What is the difference between anaerobic & aerobic respiration? Name some organism that uses the aerobic mode of respiration?

What are the main components of our environment? Explain each of them briefly.

What are examples of hydrotropism plants?