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Making a study guide.
1. Predict the change in an ecosystem if an organism is removed or introduced.
2.Describe how the biological concept of a niche helps reduce competition.
3 What is colonization?
4.Communicate the need to prevent animal extinction.
5.Identify the ecological succession as a series of changes in a community in which new populations of organisms gradually replace existing ones form colonization to climax community and through secondary succession after a disaster.
Thanks to all that help!

For a science poster I have to arrange some terms from “biggest” to “smallest” based on how where the terms fit in a biosphere. My teacher assigned this project before we have actually started the unit, so we haven’t learned this yet and I don’t know if I have them in the right order. These are the words in the order I put them in:
Biosphere
Biome
Ecosystem
Community
Population
Habitat
Niche
Organism
Is this how you would have ordered them? I know for sure that the first and last terms are right, but I’m not sure about the rest.

Parasites like other organisms carry out a niche or a functional role in the environment. Describe their functional role. How do they interact at the various emergent levels of ecology? Population, community, ecosystem levels

The organisms of one species living together in the same place at the same time are a ____.
(1 point)
community
population
niche
all of the above
2.
Which process uses oxygen in plants, algae, and animals?
(1 point)
transpiration
photosynthesis
chemosynthesis
respiration
3.
During photosynthesis, light energy becomes ____ energy.
(1 point)
soil life
chemical
mechanical
pyramid
4.
Which of the following eats consumers?
(1 point)
carnivore
herbivore
bacteria
fungi
5.
Nitrogen in the soil is used by ____.
(1 point)
plants
animals
both a and b
neither a nor b
6.
As you move upward, from level to level, in an energy pyramid, energy ____.
(1 point)
decreases
increases
stays at the same level
is destroyed
7.
Of the following, which is NOT a freshwater ecosystem?
(1 point)
lake
pond
estuary
swamp
Completion
8.
The portion of Earth that supports life is called the ____________________.
(1 point)
9.
The burrow a chipmunk digs under a patio stone is an example of a(n) ____________________.
(1 point)
10.
Organisms that can use the energy from an outside source such as the Sun to create energy-rich molecules are called ____________________.
(1 point)
11.
A symbiotic relationship in which both organisms benefit is called ____________________.
(1 point)
12.
Average weather conditions over time are called ____________________.
(1 point)
Short Answer
13.
Compare and contrast a community and an ecosystem.
(3 points)
14.
Why must a producer be at the base of every food chain?
(3 points)
15.
Describe the relationship between CO2 and oxygen in the process of photosynthesis. How does this benefit both plants and animals?
(3 points)
16.
Compare a climax community to a pioneer species.
(3 points)
17.
List at least three ways in which grassland and tundra biomes are similar. (3 points)

which ecosystem is easy to do a project on?
im doing a 10 page essay i have to explain what the ecosystem i choose
i have to talk about its:
abiotics
biotics
primary source
climax community
habitat
niche
resource
symbiosis
biome
HELP ME AND IF YOU CAN TRY TO ANSWER SOME!!!! PLEASE

which ecosystem is easy to do a project on?
im doing a 10 page essay i have to explain what the ecosystem i choose
i have to talk about its:
abiotics
biotics
primary source
climax community
habitat
niche
resource
symbiosis
biome
HELP ME AND IF YOU CAN TRY TO ANSWER SOME!!!! PLEASE