______ is the name given to the broadest level of ecological organization that includes all other levels.
______ is a molecule that is formed when three atoms of oxygen bond together.
_______ is the level of ecological organization which includes all members of a single species living in a particular area.
The burning of oil, coal, and natural gas release large amounts of ______ _______ into the atmosphere
Scientists are concerned that _______ (number word) percent of the species of the world might disappear in this century.
______ are responsible for the depletion of the protective gas referred known as ozone. These are also known as CFCs.
All living organisms found in a particular area is known as a _______>
The event that occurs when a large number of species die out in a relatively short period of time
The average temperatures and precipitation levels in a particular region over a long period of time
The scientific study of the interactions between organisms and the environment
What name is given to the climate zone that receives direct or nearly direct sunlight all year long?
Verticales
The Earth has three major climate zones. Which name is given to the zone where the sun's rays strike the Earth at a very low angle?
An ________ is the collection of all the organisms that live in a particular place together with their non-living, physical environment.
_______ is the process of cold water near the poles sinks and travels along the ocean floor. When this cold water reaches warmer regions, it rises.
A gas that occurs naturally in the atmosphere and protects the Earth from harmful radiation from the sun
_______are a result of too much ultraviolet radiation reaching the surface of the Earth.
Much of the sun's heat is naturally trapped in the atmosphere warming our planet and insulating it from the cold of space. This is know as the _______ ______.
The changing angle of the sun during the course of the year causes this climate zone to range from hot to cold. Which climate zone is it?
The scientist began the field of ecology in 1866
The day-to-day condition of Earth's atmosphere
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It looks weird when printed.
First make sure you’ve published your puzzle. See the 'How do I print?' section above for more information.
99% of other printing issues have to do with printer settings. Instead of trying to fiddle with printer settings, which can be time-consuming and frustrating, there are a couple workarounds you can try.
You can try printing from a different browser, since different browsers have different default print settings. Alternately, you can try saving as a PDF (next to the print icon) and print that.
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When you hit the 'Arrange' button, our algorithm will try to arrange all your words on the grid, and will move words around to try to fit the most words.
This will get all the words on the grid about 90% of the time, depending on the word list. For the other 10%, you will get an alert explaining that the words that did not fit were added to the scratchpad.
It prints on two pages.
Big puzzles won’t always print on one page — the clues and grid are the smallest we could make them while keeping them readable for everyone.
That said, different browsers print in slightly different ways, so you could try using 'print preview' using a different browser (or try the PDF button) to see if you like how that looks better.
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