Ecological Succession
1
2
3
4
5
6
7
8
10
11
12
13
14
15
9
Across
1 Once grasses and ferns begin to grow,
________ and other small animals may
begin to live there and eat them.
3 New rock that has never had an ecosystem
on it.
6 When an ecosystem has enough
biodiversity that is it balanced, it is in
__________.
10 These can wipe out climax communities,
forcing them to succeed themselves.
12 When succession occurs for the first time in
a new ecosystem.
14 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.
15 The reason primary succession takes so
long is because the plants have to wait on
the _______ to get deep enough.
Down
2 When an ecosystem is destroyed but then
comes back to succeed itself.
4 The changes to an ecosystem that occur
over time.
5 This is the last stage (final goal) of all
ecological succession.
7 Moss and _______ are pioneer species.
8 This type of species is the first to colonize a
new area.
9 ______ are broken down by the pioneer
species to create soil.
11 _______ create new rocks that can start
primary succession.
13 The fastest growing plants, they are the first
to grow back during secondary succession.