Unit 1 Ecosystems
This is the step of the nitrogen cycle where plants absorb nitrogen compounds
The variety of ecosystems within a region is known as this.
Ecosystem Diversity
A population that is not limited by natural resources has a ____-shaped curve and is an example of an __________ growth model
J-shaped; exponential
Magma ___________ at a hot spot
Rises
If there are 10,000 Kilocalories of energy available at the producer level, how many kilocalories wil be available at the tertiary level?
10 kcal
This is a type of lake with very high productivity as a result of high levels of nutrients
Eutrophic lake
A spruce tree is harvested so the wood can be used to build a house. What type of ecosystems service is being provided?
Provisional service
The average number of children each woman will bear is known as this
Total Fertility Rate
Tectonic movement of Earth's plates it the result of ______________ circulation in the Earth's ____________________
Magma; Asthensophere
A forest has a GPP of 4 kg/C/meters squared/year and the rate of cellular respiration is 3 kg/C/meters squared/year. What is the NPP?
1.0 kg/C/meters squared/year
This is one way in which humans can impact the nitrogen cycle
Fertilizer use, runoff from animal waste/farming
High survival throughout the lifespan until individuals die during adolescence is typical of a Type ____ Survivorship Curve
Type I Survivorship Curve
An age structure diagram that is growing rapidly is shaped like this
Triangle
Due to albedo, the Earth's rays are _________ (more/less) strongly reflected at higher latitudes where there is a lot of snow.
More
Using the rule of 70, a population growing at 7% would double in how many years?
10 years
How does an algal bloom effect the oxygen content of water?
Decrease (causing hypoxic conditions)
The relative abundance of different species within a community is known as this
Species evenness
This is the stage of the demographic transition that is characterized by rapid growth, because death rates are decreasing while birth rates are staying the same
Phase 2
This is the primary reason for the seasons on Earth
A ______________ zone is a geological feature where one tectonic plate slides beneath another plate at a convergent plate boundary
Subduction
What is a possible effect of deforestation on the carbon cycle?
Increases the amount of CO2 in the atmosphere
Two species will compete if they have a _______ (high/low) level of _______ overlap
high; niche
This is the stage of the demographic transition where population growth is stable, and the age structure diagram looks like a column
Stage 3
______________ soil has the highest porosity while _____________ has the lowest porosity
Sandy; Clay
The infiltration of pollutants into groundwater would be _____________ (higher/lower) in sandy soil compared to clay soil due to how ______________ (quickly/slowy) it drains
Higher; quickly