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Ecological Succession

Across
Once grasses and ferns begin to grow, ________ and other small animals may begin to live there and eat them.
New rock that has never had an ecosystem on it.
When an ecosystem has enough biodiversity that is it balanced, it is in __________.
These can wipe out climax communities, forcing them to succeed themselves.
When succession occurs for the first time in a new ecosystem.
Once plants and animals start coming to a new ecosystem they help make the soil more nutrient-rich because their bodies will _______ when they die.
The reason primary succession takes so long is because the plants have to wait on the _______ to get deep enough.
Down
When an ecosystem is destroyed but then comes back to succeed itself.
The changes to an ecosystem that occur over time.
This is the last stage (final goal) of all ecological succession.
Moss and _______ are pioneer species.
This type of species is the first to colonize a new area.
______ are broken down by the pioneer species to create soil.
_______ create new rocks that can start primary succession.
The fastest growing plants, they are the first to grow back during secondary succession.