Isabel makes an open circuit using a cell, a bulb, and wires. she leaves the ends of two wires free as shown in the picture. she then tests a few objects for conduction by touching them with the ends of the free wires. which item will complete the circuit? a) rope b) screwdriver c) steel fork d) pencil

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

it would be d. henry moseley

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