Which statement explains why many scientists believe that carbon dioxide has likely contributed more to global warming than other greenhouse gases? Carbon dioxide is emitted from fertilizers used in farming.
Other greenhouse gases trap more heat than carbon dioxide.
Carbon dioxide has increased as a result of increased human activities.
Carbon dioxide is emitted from commercial refrigeration.

Carbon dioxide has increased as a result of increased human activities.

Explanation:

not sure

C. Carbon dioxide has increased as a result of increased human activities.

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when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

airlines i think? or a cruise boat? does this work out for u? ?