How might you estimate the minimum temperature

What natural processes produce large quantities of co2

Which are forms of frozen water? check all that apply. dew frost hail rain sleet

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?