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Unit 1 Vocabulary

Across
natural home or environment of an animal, plant, or other organism
Living
biological community of interacting organisms and their physical environment
community in which populations of plants or animals remain stable and exist in balance with each other and their environment
environmental factors and interspecies relationships that influence the species
ecological succession after ecological disaster, significantly alters an area but has not rendered it completely lifeless.
Ability to make its own food
microbial process that converts ammonia and similar nitrogen compounds into nitrite (NO2–) and then nitrate (NO3–)
relationship where one organism benefits and the other is harmed (+ -)
Down
each of several hierarchical levels in an ecosystem, only 10% is passed among these
Not living
ecological succession in which plants and animals first colonize a barren, lifeless habitat. (NO soil!)
various organisms in an area
group of living organisms consisting of similar individuals capable of exchanging genes
relationship where one organism benefits and the other is unaffected (+ 0)
variety of life in the world or in a particular habitat or ecosystem
particular section, group of animals living in an area
hardy species that are the first to colonize barren environments or previously biodiverse ecosystems
relationship where both organisms benefit (+ +)
a large naturally occurring community of flora and fauna occupying a major habitat, e.g. forest or tundra.