your presentation should make a convincing argument supporting or opposing the idea that natural gas is a clean energy
source. your presentation should answer some of these questions:
what is natural gas?
what geological processes form natural gas?
• is natural gas found in equal amounts around the globe? why or why not?
• how much natural gas is used in the united states each year? how does this compare with oil and coal use?
how does burning natural gas influence the carbon cycle?
• how much carbon dioxide (co2) does natural gas emit compared with other fossil fuels?
• are there energy alternatives that emit less co2 than natural gas does? if so, are these solutions equally available
everywhere on earth?
• based on your findings, would you consider natural gas a clean source of energy?
write down two additional questions you have about natural gas that will you make this argument in your
presentation

Sea levels are rising due to climate change while increasing numbers of people are moving into coastal areas. to accommodate more people, there has been increased construction of beachfront resorts and condominiums. how is this impacting sea turtle numbers and biodiversity and why? a. the increased human population in coastal areas has meant that more food is available to the turtles (e.g., dropped food, waste from restaurants), which has led to an increase in the numbers and diversity of sea turtles. b. there has been very little change in the numbers and biodiversity of sea turtles because the planet is so vast that they can simply relocate to less crowded beaches. c. this has resulted in a decrease in numbers and diversity of sea turtles because it is restricting available nesting sites, and hence reproduction. d. this has resulted in an increase in numbers and diversity of sea turtles because people are around to protect them from natural predators.

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

What percentage of light hits earth's surface directly?