Mix of everything
Natural changes in ecoystem
Primary Succession
Predation
Section 1 and 2 Review
100

in all ecosystems biotic things ___________ with abiotic things

interact

100

A pine tree uses the same water source as the grass. This is an example of...

competition

100

Which type of succession takes place in an area where life has never lived before?

primary succession

100

An example of predation is

answers will vary

100

A living thing is 

A non living thing is

Biotic

Abiotic

200

what method do scientists use to count the amount of organisms in a certain area

sampling

200

Lightning strikes a tree and causes a forest fire. This is an example of...

weather

200

The first organism present in primary succession is known as a

pioneer species

200

If the hare population decreases then which of the following will happen to the population of lynx:

it will also decrease

200

What are the three types of symbiosis?

commensalism, mutualism, parasitism

300
These are 2 human causes of changes in the ecosysytem

Building dams, forest clearing, floods and droughts

300

Zebra mussels travel across the ocean and take over Lake Superior. This is an example of...

bioinvasion

300

after lichen breaks down rock what is the next thing to grow?

mosses, grasses, fungi and herbs

300

If the hare population increases then which of the following will happen to the population of lynx:

it will also increase

300

a place where garbage is placed and not buried is a 

dump

400

These are 2 natural changes in the ecosystem

forest fires, tornados, hurricanes, wind storms etc.

400

A coyote catches a roadrunner and eats it for dinner. This is an example of...

predation

400

Oak trees begin growing in a field of grasses and shrubs. The oak trees are an example of...

climax community

400

if the amount of grasses disappear, what will likely happen to the population of the rabbit

it will decrease

400

An bird and a tree and tree is an example of

commenselism

500

This is the result of something happening when it was not originally meant to happen.

What is unintended consequences

500

what are 3 ways that weather can change an ecosystem

natural disasters, floods, lightning

500

what type of trees grow first?

coniferous then deciduous 
500

if the lynx population goes down in an ecosystem, what would happen to the producers?

likely go down since the primary consumers would go up

500

The five basic needs of life are

water, energy, oxygen, food and suitable living conditions

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