How Ecosystems Change Crossword Puzzle

How Ecosystems Change

Read the clue closely, and use the word bank to complete the following crossword.

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natural disaster caused by tectonic plates and leads to secondary succession

type of secondary succession that involves previously cultivated land

causes primary succession by producing new rock

change and replacement of organisms in an area where life did not exist before

example of a climate community

change and replacement of organisms in an area where life existed before

group of organisms of different species that develops by the end of ecological succession

number of years it takes primary succession to occur

organisms that first colonize an uninhabited area

part of the ecosystem that changes in ecological succession

species that appear after bacteria, lichen, and moss during ecological succession

present at the start of primary succession

human activity that involves clearing trees and leads to secondary succession

change and replacement of organisms in an area over time

present at the start of secondary succession

human activity that involves growing crops and leads to secondary succession

number of years it takes for secondary succession to occur

organisms that sprout or release seeds when small fires are present

natural disaster caused by excessive rainfall and leads to secondary succession

causes primary succession by melting

causes secondary succession and eliminates brush that could lead to large forest fires

organism made up of a fungus and an algae that is a pioneer species

part of the community that changes in ecological succession

species that appear after grasses during ecological succession

another pioneer species like lichen

Answer