Unit 1 Vocabulary
Biogeochemical Cycles
Primary Productivity & Trophic Levels
Biomes
Food Webs & Chains
100

The association between organisms of two different species in which each benefits

Mutualism

100

This cycle is powered by the sun, relies on the ocean as a primary reservoir, and consists of activities such as transpiration and percolation.

Hydrologic (Water) Cycle
100

This rule states that only 10% of energy is transferred from one trophic level to the next.

The 10% rule.

100

This biome is a cold, treeless biome with low-growing vegetation.

Biodiversity

100

The sequence of consumption from producers through tertiary consumers is known as

Food chain

200

_________ is a land-based community of organisms and the interactions of biotic and abiotic components in a given area

Terrestrial ecosystem

200

This cycle consists of both natural and anthropogenic sources, with photosynthesis and cellular respiration having a role in the cycle

Carbon Cycle

200

The rate at which sunlight is converted into organic compounds (glucose) via photosynthesis per unit of time.

Primary Productivity

200

Countries where this biome is found include Central America, Brazil, Southern India, Madagascar, and the Philippines

Tropical rainforest

200

A model of how energy and matter move through two or more interconnected food chains.

Food web

300

When two species evolve to divide a resource based on differences in their behavior or morphology.

Resource partitioning
300

Weathering of rock releases an element into the ecosystem that can contribute to this cycle.

Phosphorus Cycle
300

The rate of energy stored by plants in a given area, after removing the energy they use for their own functions.

Net Primary Productivity (NPP)

300

This biome is categorized by having streams, rivers, ponds, and wetlands

Freshwater biomes
300

True or False:

Food webs show that organisms can exist at different trophic levels?

True

400

A carnivore that eats secondary consumers 

Tertiary consumers

400

This cycle does not have an atmospheric component, with rock/sediment serving as a major reservoir

Phosphorus Cycle

400

Herbivores or Primary Consumers are part of which Trophic Level?

2nd Trophic Level

400

A biome with warm summers and cold winters with over 39 inches of annual precipitation (hint: East coast of United States & most of Europe).

Temperate seasonal forest

400

This type of feedback loop in a food web occurs when an increase in predators leads to a decrease in prey populations, which in turn reduces food availability for the predators, eventually leading to a decrease in the predator population

Negative feedback loop
500

A zone of open water in lakes and ponds as deep as the sunlight can penetrate

Limnetic zone

500

This cycle includes the process of assimilation, which is where algae and plants absorb compounds from this process into their tissues.

Nitrogen cycle

500

If a primary consumer trophic level has 4000 kJ of energy, how much energy does the tertiary consumer trophic level have?

40 kJ

500

This biome, also referred to as a taiga consists of coniferous evergreen trees that can tolerate cold winters and short, cool growing seasons in the summer.

Boreal forest

500

An ecological phenomenon triggered by the addition or removal of top predators and involving reciprocal changes in the relative populations of predator and prey through a food chain, which often results in dramatic changes in ecosystem structure and nutrient cycling.

Trophic cascade