Explain why precipitation on earths surface is less common on land than itbis over the oceons. Base your answer on the water cycle

If football was tossed in air without gravity or friction the ball would go into space

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current

The density of the block of iron is lees than the density of mercury but the density of the block of iron is greater than the density of water