Crossword puzzle
earth systems and patterns - biogeochemical cycles
producer
note: if one letter is incorrect in a term, that part of the puzzle will be graded as a missed answer.

- across
3) this is an organism that supplies matter and energy, also known as an autotroph.
6) this is the process of breaking down resources and reusing them in some fashion.
8) this is the process that releases energy by breaking down food molecules in the presence of oxygen.
9) these are the components of the reservoirs of carbon that are exchanged in our environment.
10) energy stored in chemical bonds of molecules.
- down
1) these are the components of the reservoirs of oxygen that are exchanged in our environment.
2) this is the energy that comes to earth from the sun.
4) this is the part of a biogeochemical cycle where nutrients are stored, possibly for long periods of time, and they are not actively cycling in nature.
5) this is any unwanted substance or toxin that is expelled from organisms.
7) this is the main energy storage and transfer molecule in the cell.

Over the past 60 years, many amphibian species have experienced significant population declines and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. in some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. if these resistant individuals continue to survive and prosper, new resistant populations might emerge. this would be an example of the founder effect artificial selection genetic drift natural selection sexual selection

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

What prevents odyssey from killing the sleeping cyclops