Why is a thin ozone layer over antarctica of particular concern to scientists? a. it is directly over one of the most biologically diverse areas in the world. b. it could result in melting ice caps, causing sea levels to rise. c. it would affect fishing hauls in the areas beneath it. d. no scientific research can be conducted as long as the hole exists.

What determines the properties of a mineral

Read the passage below. which of these statements describes the problem with including this passage as part of an explanatory essay? passage: the neolithic revolution changed everything for humans. before the n.r., you couldn't even plant food. i know you want to hear more, don't even deny it! o a. the tone is too dull and does not include a hook to keep the reader interested. o b. the tone is too objective and does not show the author's opinion. o c. the tone is too transitional and does not stay focused on one topic. o d. the tone is too informal and does not use appropriate vocabulary. surmit

What issue led to the split in the democratic-republican party in the late 1850s