UNIT 1 LW ECOSYSTEMS
Living things like plants and animals are called these factors.
What are biotic factors?
The variety of life in an area is called this.
What is biodiversity?
The total number of individuals of one species in an area is called this.
What is a population?
Earthquakes usually happen along these lines.
What are plate boundaries?
A land mass completely surrounded by water is called this.
What is an island?
An ecosystem includes living things and these nonliving parts like water and soil
What are abiotic factors
The range of conditions an organism can survive in is called this.
Tolerance
Species that have many babies and little parental care are called this.
What are r-selected species?
The top layer of soil rich in organic matter is called this.
What is topsoil?
This term describes all the continents joined together millions of years ago.
What is Pangaea?
This biome is hot, dry, and has very little rainfall.
What is a desert?
Traits that help an organism survive are called these.
What are adaptations?
The maximum population an environment can support is called this.
What is carrying capacity?
This soil type is best for farming.
What is loam?
Mountain ranges often form where these two landmasses collide.
What are tectonic plates?
This nutrient cycle does NOT have a gas phase and mostly comes from rocks.
What is the phosphorus cycle?
This type of succession happens after a forest fire.
What is secondary succession?
The average number of children a woman has is called this.
What is total fertility rate?
Land that drains water into the same river or lake is called this.
What is a watershed or runoff
This type of boundary creates mountains when two continental plates crash.
What is a convergent boundary?
This measures how fast producers make energy in an ecosystem.
What is primary productivity
This theory explains why islands closer to land have more species.
What is island biogeography?
This model shows population growth slowing as it reaches carrying capacity.
What is logistic growth?
El Niño and La Niña causes this change in weather.
The water's overall temperature
This theory explains how continents were once connected and slowly drifted apart.
What is continental drift?