Ecosystems
Organisms that make their own food using sunlight are called this.
What are Producers (autotroph)?
CED Page: 33
The variety of species in an ecosystem is known as this.
What is Biodiversity
CED Page: 49
The maximum population size an ecosystem can support is called this.
What is Carrying Capacity?
CED Page: 63
This Earth layer consists of solid rock and tectonic plates.
What is the lithosphere?
CED Page: 77
This agricultural practice involves growing one crop repeatedly over large areas.
What is monocropping?
CED Page: 95
This process returns carbon from organisms back into the atmosphere.
What is cellular respiration?
CED Page: 39
Species at risk of extinction are classified as this.
What are endangered species?
CED: 54
Population growth that forms an S-shaped curve is called this.
What is logistic growth?
CED Page: 64
This process occurs when water changes from liquid to vapor.
What is evaporation?
CED Page: 82
Removing all trees from a forest area at once is called this.
What is clear-cutting?
CED Page: 103
A relationship where both organisms benefit is known as this.
What is mutualism?
CED Page: 35
This type of species is critical to ecosystem stability despite low abundance.
What is a keystone species?
CED Page: 53
The average number of years an individual is expected to live is called this.
What is life expectancy?
CED Page: 71
The boundary where tectonic plates collide is called this.
What is a convergent boundary?
CED Page: 79
This irrigation method conserves water by delivering it directly to roots.
What is drip irrigation?
CED Page: 97
The gradual change in species composition over time in an ecosystem is called this.
What is ecological succession?
CED Page: 43
The introduction of zebra mussels into U.S. waterways is an example of this type of species.
What is an invasive species?
CED Page: 56
This demographic transition stage has high birth rates and declining death rates.
What is Stage 2?
CED Page: 69
Underground layers of permeable rock that store water are called these.
What are aquifers?
CED Page: 84
Excess nutrients in water can lead to this process of oxygen depletion.
What is eutrophication?
CED Page: 111
A forest ecosystem has producers that capture 20,000 kcal of energy from the sun. A hawk eats a snake that ate a frog that ate insects that ate plants. Using the 10% rule, calculate how much energy is available to the hawk.
What is 20 kcal of energy available to the hawk?
CED Page: 37
A protected island originally has 800 native bird species. After deforestation for agriculture, 18% of species are lost. Conservationists are trying to estimate how many species remain to plan restoration efforts.
What is 656 species remaining?
CED Page: 55
A town reports that its population grew from 1,200 people to 1,560 people over 5 years. City planners need to calculate the percent increase to determine if infrastructure expansion is needed.
What is a 30% increase?
CED Page: 64
A family uses 250 gallons of water daily. Over 7 days, they use this many gallons.
1,700 gallons
CED Page: 84
A drought-prone city has a household that uses 300 gallons of water per day. During a 2-week drought emergency, residents are asked to calculate their total water demand to determine if rationing is necessary.
What is 4,200 gallons of water used in 14 days?
CED Page: 84