What if there was NO pollution in the world

Why does bubbling occur when vinegar mixed with baking soda

Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human

What discovery would weaken the primordial soup hypothesis of the origin of life? question 19 options: lightning was common on early earth. earth’s early atmosphere contained carbon dioxide, water, and trace gases. earth’s early oceans were warm and shallow. asteroid impacts were uncommon when life is presumed to have begun.