Image 1. A Duterty's wings lifted during off. As the wings snap together in a wing clap, they will propel the butterfly forward. Photo Stephen Dalton Science Source Photo: Stephen Dalton Science Source
Butterflies flutter when they fly. This is thanks to their large wings. This fluttery flight helps them
get away quickly from predators. Now scientists at Lund University in Sweden know how they do
it.
They clap their wings above them when they take off. This creates jet propulsion. This is the act of
pushing an object in one direction by ejecting a liquid or gas, such as air, in the opposite
direction. Aircraft like planes use jet propulsion to get off the ground. And now, scientists know
that butterflies use this method, too. In January 2021, scientists published their findings.
Studying Butterflies
Christoffer Johansson and Per Henningsson led the new study. They are evolutionary ecologists.
They study how flight has developed in animals.

b.letter b

explanation:

this question is confusing, could you reword it?

explanation:

answer; ///i believe that it means; ///you pay no customs duty on the chocolates;

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.