Answer the following question given this paragraph: 21.3 Preserving Biodiversity Five mass extinctions with losses of more than 50 percent of extant species are observable in the fossil record. Recent extinctions are recorded in written history and are the basis for one method of estimating contemporary extinction rates. The other method uses measures of habitat loss and species-area relationships. Estimates of contemporary extinction rates vary but are as high as 500 times the background rate, as determined from the fossil record, and are predicted to rise. There is a legislative framework for biodiversity protection. International treaties such as CITES regulate the transportation of endangered species across international borders. Legislation within individual countries protecting species and agreements on global warming have had limited success; there is at present no international agreement on targets for greenhouse gas emissions. In the United States, the Endangered Species Act protects listed species but is hampered by procedural difficulties and a focus on individual species. The Migratory Bird Act is an agreement between Canada and the United States to protect migratory birds. The non-profit sector is also very active in conservation efforts in a variety of ways. Conservation preserves are a major tool in biodiversity protection. Presently, 11 percent of Earth's land surface is protected in some way. The science of island biogeography has informed the optimal design of preserves; however, preserves have limitations imposed by political and economic forces. In addition, climate change will limit the effectiveness of present preserves in the future. A downside of preserves is that they may lessen the pressure on human societies to function more sustainably outside the preserves. Habitat restoration has the potential to restore ecosystems to previous biodiversity levels before species become extinct. Examples of restoration include reintroduction of keystone species and removal of dams on rivers. Zoos have attempted to take a more active role in... Q: Removal of dams on rivers is an example of what? A:
OPTIONS:
- evolution
- reproduction
- renewal
- restoration
restoration

Answer the following question given this paragraph: In addition to ALS and Alzheimer's disease, other serious nervous system diseases include multiple sclerosis, Huntington's disease, and Parkinson's disease. T hese diseases rarely, if ever, occur in young people. Their causes and symptoms are listed below ( Table below ). The diseases have no known cure, but medicines may help control their symptoms. Q: Multiple sclerosis, huntington's disease, and parkinson's disease all affect what body system? A:
OPTIONS:
- reproductive system
- circulatory system
- lymph system
- nervous system

Answer: nervous system

Question: Answer the following question given this paragraph: Elements involved in nuclear reactions are radioactive. How do you think radioactive elements differ from other elements?. Q: Elements involved in nuclear reactions are what? A:
OPTIONS:
- detectable
- inert
- static
- radioactive
Answer: radioactive

input with options: Answer the following question given this paragraph: In beta decay, an electron and a proton form from a neutron (another unusual particle, called an antineutrino, is also produced). Only the electron is emitted from the nucleus. How does this change the atomic number and atomic mass of the atom?. Q: What particles are formed from a neutron in beta decay? A:
OPTIONS:
- rust and proton
- mucus and a proton
- atom and proton
- electron and a proton
output: electron and a proton

Q: Answer the following question given this paragraph: The genetic code works as a series of three-letter codes. Each sequence of three letters, called a triplet, corresponds to one of the twenty common amino acids. The triplets are read by the cell, one after the other, in the process of protein synthesis. The Table below shows all of the possible triplets and the amino acids that result from each three-letter code. Q: In what kind of a series does the genetic code work? A:

OPTIONS:
- nine letter-codes
- universal codes
- four-letter codes
- three-letter codes

A: three-letter codes

Answer the following question given this paragraph: GFCI stands for ground-fault circuit interrupter. GFCI outlets are typically found in bathrooms and kitchens where the use of water poses a risk of shock (because water is a good electric conductor). A GFCI outlet contains a device that monitors the amounts of current leaving and returning to the outlet. If less current is returning than leaving, this means that current is escaping. When this occurs, a tiny circuit breaker in the outlet opens the circuit. The breaker can be reset by pushing a button on the outlet cover. Q: Gfci stands for ground-fault circuit what? A:
OPTIONS:
- inspiration
- infers
- isolates
- interrupter
interrupter