This printable crossword puzzle has 24 clues. Answers range from 7 to 19 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
A word used to describe any living thing.
An environment that provides the things an organism needs to live, grow, and reproduce.
The living parts of a habitat.
The nonliving parts of a habitat. (e.g. water, sunlight, oxygen, temperature, soil)
The process that allows plants to make their own food using the energy of the sun.
The process that allows plants and animals to turn energy from food molecules, glucose, into an energy molecule, ATP, that can be used by cells.
The study of how living things interact with each other and with their environment is called…
A group of organisms that are physically similar and can mate with each other to produce offspring that can also mate and reproduce.
All the members of one species in a particular area at a particular time.
All the different populations that live together in a specific area at a particular time.
The community of organisms that live in a particular area, along with their nonliving surroundings.
An organism that obtains energy by feeding on other organisms.
An organism that can make its own food. They are the source of all the food in an ecosystem. (e.g. plants)
Organisms that break down wastes and dead organisms and return the raw materials to the ecosystem. (e.g. fungi and bacteria)
The largest population that an area can support.
An environmental factor that causes a population to stop growing. (e.g. food, water, space, weather conditions)
Struggle between organisms for limited resources in a habitat.
A relationship between two species in which at least one species benefits.
A relationship between two species in which one species benefits and one is unharmed. (+, 0)
When one organism, parasite, is living on or inside another organism and harming the host organism. (+,-)
An interaction between two species in which one organism kills and eats another organism. (+,-)
A relationship between two species in which both specis benefit. (+,+)
The series of predictable changes that occur in a community over time.
A series of predictable changes that occur in an area where no soil or organisms exist. (e.g. after a volcanic eruption)