Topic H
This is the term for a group of the same species living in the same place and time.
What is population?
This term refers to the total of all the resources a species requires for its survival, growth, and reproduction.
What is a niche?
This is the overall term for the variety of life on Earth.
What is biodiversity?
The level of biodiversity that refers to the amount of variation in a species' gene pool.
What is genetic biodiversity?
This survivorship curve is known as "Late Loss" and parents put a large amount of energy in a small amount of offspring.
What is Type I?
This is a measure of the number of individuals of a particular species that live in a particular area.
What is population density?
This is the term for a species that has a disproportionate influence on the structure of a community, such as a sea otter.
What is a keystone species?
The number of species named and classified on Earth.
What is 1.7 million?
Organisms, such as plants, that transform energy and nutrients into organic molecules.
What is an autotroph?
This phenomenon occurs when gases in the atmosphere trap heat, keeping Earth warm, but too much of it causes global warming.
What is the greenhouse gas effect?
This type of survivorship curve (Type I, II, or III) is characterized by early loss, with parents putting a small amount of energy into a large number of offspring.
What is Type III?
This symbiotic interaction benefits both species, with an example being a bee getting nectar while pollinating a flower.
What is mutualism?
This is the threat of harvesting a species at a rate faster than it can naturally reproduce and recover.
What is overexploitation?
A population with a large number of younger individuals is expected to show this type of growth.
What is an increasing population?
This is the process where fat-soluble pollutants become more concentrated in organisms at successively higher trophic levels of the food chain.
What is biomagnification?
The lack of this key resource is a factor that increases the death rate due to organisms being unable to meet their energetic or material needs.
What is nutrient availability?
This interaction describes two organisms fighting over limited resources like shelter or nutrients.
What is competition?
The process where excess nutrients cause an algae bloom, leading to a massive drop in oxygen and the eventual creation of a dead zone.
What is eutrophication?
This threat is a non-native species that is introduced to a new area and spreads aggressively, causing harm to the environment.
What is an invasive species?
This is a measure of human demand on the Earth's resources.
What is the ecological footprint?
This graph shows a population's distribution of age classes and determines how many individuals are in their reproductive prime.
What is population age structure?
The level on the food chain that supports all other levels.
What is a primary producer?
This greenhouse gas is listed along with carbon dioxide, nitrous oxide, and CFC's as trapping heat in the atmosphere.
What is methane?
Due to the Earth's curvature, this region receives the most intense solar radiation.
What is the equator?
Energy enters the ecosystem, usually from the sun, and moves through the food chain in this type of direction.
What is one way through?