Aquaculture and fish farming can create environmental problems because they . A. deplete the natural fish supply B. change natural marine life habitats C. change riverbeds and lead to severe flooding D. introduce new species that overwhelm natural species

B:change natural marine life habitats

Explanation:

Aquaculture is a method of farming fish or other marine animals so they can simply be used as a food source, raw materials or foreign exchange and others. The practice of fish farming has both negative and positive effect/impact on the environment. The negative effects of some farmed fishes e. g salmon are changes the chemical makeup and biological diversity, harmful algal blooms - occur with increase in nitrogen levels, causes behavioral changes and mortality and others. It change sometimes great in natural marine life habitats.

new communications technology has affected the way social movements are organized because nowadays, social movements rely on social networks and the media to get different people with a similar way of thinking in contact, and thus, get them to mobilize for a greater cause.

individuals only participate in collective action when they feel identified with it. is in this aspect that social media becomes relevant, because it guarantees communication among all individuals and organizes the social actions that are going to be carried out, i.e., the social movements.

in addition, being covered by the media is important to validate the message and make it relevant in the social agenda, as well as to reach more people who can share interests, appealing to public sympathy for their cause.

in conclusion, it is by social networks and social media that social movement is given birth; by connecting different individuals with similar ideas and organizing them to mobilize for a greater cause.

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer