Question 4 of 20 What is required for an electromagnet to produce a magnetic field that is strong enough to be useful? A. A coil of wire with current running through it B. A permanent magnet C. A magnetic metal core with wire wrapped around it D. A magnetic metal core

Divide 108.2 x 10^6 into 1.5 x 10 and the result will be in au (astronomical units)

It equals just about 6,300 km per hour each day an week

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.