Water Cycle
Population Growth
Food Webs
Ecological Succession
Competition, Predation, and Symbiosis
100

Water molecules turn from liquid to gas 

Evaporation

100

Two types of growth are 

Logistic and Exponential

100
The trophic level with the most amount of energy
Producers
100

This type of succession starts with soil

Secondary succession

100

An animal kills another animal immediately to meet its energy needs

Predation

200

Water goes through soil by moving through the surface

Infiltration
200
One example of a density independent factor is 

Natural disasters

Climate 

200

Only 10% of energy gets passed on to the next trophic level. Energy is used as part of animals' metabolic processes. Some is lost as what form of energy?

Heat energy

200

This type of succession has moss and lichens as its pioneer species

Primary succession

200

The three types of symbiotic relationships

Parasitism 

Mutualism

Commensalism

300

Water molecules stick to other water molecules

Cohesion

300

One example of a density dependent factor is 

Space, food, disease, predators

300

The species that maintains balance in an ecosystem

Keystone species
300

The final stage of succession

Climax community


300

Relationship between organisms that depend on the same resources at the same time (like the hawk and the fox with the rabbit) 

Competition

400

Water molecules stick to other molecules, like sticking to the walls of a plant

Adhesion

400

The type of growth curve that looks J-shaped 

Exponential growth

400

List one of four ways an invasive species has a competitive advantage in its ecosystem

Lack of natural predators

Quick reproduction

Ability to adapt to any climate

Aggressive competitors 

400

As ecosystems move through the stages of succession, the populations of organisms in them change. Which of the following describes the stage of succession likely to have the most species diversity?


a. A newly formed volcanic island

b. An agricultural field that has not been plowed for one year

c. A temperate forest that has never been cleared by logging

d. A field that is regularly mowed

400

Which of these best demonstrates mutualism between certain types of bacteria and humans?


a. bacteria obtain nutrients from the gut and produce vitamin K used by humans.

b. Bacteria become resistant to antibacterial medication that humans use for treatment.

c. Invasive bacteria at an area of injury produce toxins that damage healthy tissues of the human body.

d. Bacteria in improperly prepared food is consumed by humans, causing food poisoning

500

Water moving to the atmosphere through plants

Transpiration

500

What is happening at carrying capacity? 

Limiting factors constrain population size. The ecosystem is holding the maximum amount of that population it can. The population is not dying, but it is not growing; it is at maintenance.

500

In a food pyramid, the total number of organisms in a trophic level is called

Biomass
500

What are steps of ecological succession? (Either primary or secondary) 

1. Start from nothing

2. Pioneer species 

3. Intermediate succession - new plant species pop up  

4. Climax community - multiple developed species in an ecosystem

500



a. Relationships 1 and 4 are examples of mutualism.

Relationship 2 is an example of commensalism. Relationship 3 is an example of parasitism.

b. Relationships 1 and 2 are examples of commensalism.

Relationships 3 and 4 are examples of mutualism.

c. Relationship 1 is an example of commensalism.

Relationships 2 and 4 are examples of mutualism. Relationship 3 is an example of predation.

d. Relationships 1, 2, and 4 are examples of mutualism.

Relationship 3 is an example of parasitism.

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