You are presented with the question "What harms the respiratory and circulatory systems?" and the following answer choices: - Cars - oxygen - smoking - vehicles - emissions - gasoline - fresh air - lungs Now knowing that air pollution harms the respiratory and circulatory systems and smoking is a form of air pollution, choose the best answer.
smoking

You are presented with the question "What can make objects heat up well?" and the following answer choices: - wool - metal - paper - rubber - the sun - a prism - Light - energy Now knowing that if heat is conducted to an object then that object will become hot and metals conduct heat well, choose the best answer.
metal

You are presented with the question "Fossil fuels are formed with help from" and the following answer choices: - consumers - burning - heat energy - producers - scavengers - Decomposers - Greenhouse gases - vehicles Now knowing that fossil fuels are formed from dead organisms over time and decomposers decay dead organisms or their wastes, choose the best answer.
Decomposers