[SOLVED] read the article and answer some questions

I’m studying for my Science class and need an explanation.

Directions:

• Each response should directly answer the specific prompt(s) and have a clear and concise facts and/or argument being presented about the topic.
• Please try to follow directive prompts and be concise. Make answers obvious about what they are answering.
• Clear tables and figures are accepted and encouraged methods of conveyance in addition to sentence and bullet text
• Spelling does not count, but words need to be recognizable. If it is not clear it won’t earn points.
• You are graded on accuracy of knowledge but also the demonstrated expertise and communication of that knowledge

Submission:

• Each question’s answer should be started on its own page, if submitted together.
• Each answer should have the full prompt at the top of the page