What do climate change (see concept 1.1 and concept 3.2) and ocean acidification have in common?

They are caused by an increase in global temperatures

Explanation:

Global warming will cause a change in the weather patterns of a region – called climate change. A place could experience extreme weather such  as increased dryness or wetness.  This is mainly due to takeup of this heat by the oceans hence influencing global currents.

As the oceans become warmer, they are able to absorb more carbon dioxide from the atmosphere. This causes these water to have a higher acidity than normal because of the formation of carbonic acid.

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answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.