Unit 1
Unit 2
Unit 3
Unit 4
Calculations
100
This occurs on soil that are initially devoid.
What is Primary Succession?
100
A change in the genetic composition of a population over time.
What is Evolution?
100
What does the logistic growth curve vs the realistic growth curve look like?
100
Explain the Ozone Layer.
It is found in the stratosphere and removes UV-C and some UV-B radiation.
100
On an island of 5,000 square miles off a coast, there are currently 250,000 inhabitants of the island. Last year, there were 12,000 new children born and 10,000 people were recorded as deceased. What is the current population density?
What is 50 people/square miles?
250,000/5,000
200
The climatogram below represents which biome?
What is the Tundra?
200
Benefits of biodiversity that humans use, including lumber, fur, meat, crops, water, and fiber.
What is Provisioning Services?
200
Organisms that experience a larger range of tolerance, broader niche makes them less prone to extinction & more likely to be invasive
What is a Generalist Species?
200
Explain shortwave radiation.
This is emitted by the Earth and can be absorbed by greenhouse gases. This radiation is less energetic.
200
Scientists are closely monitoring caribou populations to examine the effect of global climate change on habitat. The maximum population size for a herd of caribou based on the amount of habitat was 650,00. A herd of caribou currently has a population size of 167,000 caribou as a result of habitat loss. What is the percent loss in population size?
What is a decrease of 74.3%?
((167,000-650,000)/650,000)x100
300
The long-term reservoir of carbon.
What is fossil fuels?
300
The limits to the abiotic conditions that a species can tolerate.
What is Range of Tolerance?
300
Max. potential growth rate, with no limiting resources
What is Biotic Potential?
300
Explain the E-Horizon.
What is the Eluviation layer? This is where nutrients may be leached out of the soil due to infiltration.
300
The net primary production of a pine forest on a lava flow on Mount Fuji is about 175,000kcal/m2/yr, and the plant respiration is estimated to be 115,000kcal/m2/yr. What is the total amount of energy transferred during photosynthesis for this ecosystem?
What is 290,000kcal/m2/yr?
GPP=NPP-R
175,000+115,000=290,000
400
Each level in an ecosystem only gives 10% of its energy to the levels above it.
What is the 10% rule?
400
What is the Theory of Island Biogeography?
Smaller islands can hold less species due to less available resources.
Farther islands hold less species due to migration ability.
As species immigration increases, extinction rates will start to increase due to competition of resources. Species will be less likely to establish themselves on the islands.
400
Earth has a human carrying capacity, probably based on food production
What is Malthusian Theory?
400
This is responsible for the deflection of global surface winds and ocean currents.
What is The Coriolis Effect?
400
If the population of a country grows at a rate of approximately 7.8 percent per year, the number of years required for the population to double is closest to
What is 9 years?
(or 8.9 years)
500
Why is each level of a trophic pyramid smaller than the level below it?
Energy is lost as it moves up the pyramid.
There is less biomass at each trophic level compared to the one below.
500
A reduction in the genetic diversity of a population caused by a reduction in its size.
What is the Bottleneck Effect?
500
What age-structure diagram best depicts high birth rates and low death rates?
500
The location where the greatest amount of radiation is found.
What is the latitude that is directly horizontal to the incoming radiation?
500
If a cities population of 15,000 experiences 89 births, 54 deaths, 12 immigrants, and 32 emigrants in the course of a year, what is its net annual percentage growth rate?
What is 0.1%?
((89+12)-(54+32)/15,000)x100