Soils
Forestry
Aquatic Ecology
Wildlife
Special Topic: Non-Point Source Pollution
100

An alphabetical letter represents this layer of soil, created by eroding bedrock.

What is... C Horizon?

100

The name for the green living portion of a tree.

What is... the Cambium?

100

Alongside e-coli, this bacteria is a useful indicator of stream health.

What is... Fecal Coliform?

100
The name for the trophic level most likely to eat producers.

What is... primary consumer?

100

The name for a region where all water drains to the same location.

What is... a watershed?

200

The soil texture known for having the greatest rate of infiltration.

What is... Sand/Sandy Soil?

200

This classification of flowering plants is notable for creating flowers and enclosed seeds.

What is... angiosperm?

200

Sporting a bright orange yolk-sac, newly hatched salmon are referred to by this name.

What is... alevin?

200

The name for an organism like wolves or sea otters, which has an outsized impact on the ecosystem, especially if the population is very small.

What is... keystone species?

200

The name for the condition where an excess amount of nutrients are introduced to an ecosystem

What is... eutrophication?

300

The phrase which describes the propensity of different soils to hold together into a clump.

What is... Soil Aggregate Stability

300

Indigenous to Washington, this conifer has scaly leaves and an iconic papery bark.

What is... Western Red Cedar

300

A secchi disk is a black-and-white device which is lowered into a body of water to determine this measure of stream health.

What is... turbidity?

300

A chemical process which fixes atmospheric carbon, making it usable by living organisms.

What is... photosynthesis?

300

The least oxygen-rich portion of a stream after a major source of pollution is known as this kind of zone.

What is... septic?

400

This diatomic element is a crucial component of soils, allowing the biotic to flourish in aerobic conditions.

What is... Oxygen?

400

This name describes extra diverse regions at the boundaries of existing biomes

What is... ecotone?

400
These areas of a stream, where water tumbles over rocks, help to incorporate oxygen into aquatic ecosystems.

What is... a riffle?

400

Smaller eye sockets on a skull may indicate this organism is mostly active during the day, a behavior which can be described using this term.

What is... diurnal?

400

This soil particle, with its high CEC, is best at trapping pollutants as they move through groundwater.

What is... clay?

500

The texture of a soil with 40% sand, 40% silt, and 20% clay.

What is... Loam?

500

DBH is an acronym which describes the appropriate location to measure a tree's size, and tells us to measure trees here.

What is... at breast height?

500

Mixing of the limnetic zones is most common during which time of year?

What is... winter.

500
The name for an ecological condition which caps the size of a population when it gets large enough.

What is... density-dependent limiting factor?

500

This 1972 piece of US legislation regulates the release of pollutants into bodies of water, including requiring permits to emit point-source pollution.

What is... the Clean Water Act?

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