In the first box : dolphins and grey seals both sleep with half their brain so that the other half can watch for predators
second box : dolphins sleep and swim at the same time ( i think )
third box : ( im sorry but I'm not sure about this one)
i hope this helps a little :)
start with a thesis statement on the topic. then put three topic sentences on that thesis in the first paragraph. your body paragraphs will be about each topic. then you final paraggraph restates the thesis and the topics.
1. White people wanted their land2. Diseases (bubonic plague, chicken pox and pneumonic plague)3. buffalos being killed in large groups.