Populations, Communities, Ecosystems Crossword Puzzle

QUESTIONS LIST: niche : an organism's role in their environment, competition : organisms competing for the same resources, predation : one organism kills another for food, mutualism : a symbiotic relationship where both organisms benefit, commensalism : a symbiotic relationship where one organism benefits and the other is unaffected, parasitism : a symbiotic relationship where one organism benefits and the other is harmed, succession : a series of predictable events that happen over time, primary succession : the series of changes that occur where no soil or organisms are exist, pioneer species : the first species to populate an area, secondary succession : occurs in a place where an ecosystem and community exist