If smoking harms the respiratory and circulatory systems, then what harms the respiratory and circulatory systems? Answer choices: - Cars - oxygen - smoking - vehicles - emissions - gasoline - fresh air - lungs
smoking

If metal can make objects heat up well, then what can make objects heat up well? Answer choices: - wool - metal - paper - rubber - the sun - a prism - Light - energy
metal

If fossil fuels are formed with help from Decomposers, then fossil fuels are formed with help from? Answer choices: - consumers - burning - heat energy - producers - scavengers - Decomposers - Greenhouse gases - vehicles
Decomposers