This printable crossword puzzle on the topic of Ecology & Evolution has 10 clues. Answers range from 5 to 14 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
The main feature of the hydrosphere.
Any form of water, such as rain, snow or hail, that falls on the earth's surface.
Fluid motion caused by an external force such as gravity.
The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide.
A naturally abundant nonmetallic element that occurs in many inorganic and in all organic compounds.
The entire body of salt water that covers more than 70 % of the world.
A salt of carbonic acid used in chemistry.
The rigid outer part of the earth, consisting of the crust and upper mantle (land).
The living organisms and their environment composing the _________ .
The process of a group of natural processes being worn away from the earth's surface.