Agent #1133Agent #1133 answeredSignal
Agent #1133 answeredcarbon dioxide
Agent #493 answeredcarbon dioxide
Agent #1133 answeredBill Gates
Agent #1468 answered12
Agent #1133 answeredAfrica
Agent #493 answeredFlorida
Agent #1468 answered3,600
Agent #1133 answeredTungsten
Agent #493 answeredDodoma
Agent #1468 answeredIndia
Agent #1468 answered366
Agent #493 answered366
Agent #1133 answeredLead
Agent #1468 answeredNile
Agent #1133 answeredMercury
Agent #493 answeredMercury