Vocabulary
Populations & Limiting Factors
Ecosystems & Human Impact
Photosynthesis & Carbon Cycle
Environmental Events & Solutions
100
What is the term for the variety of life in an ecosystem?
Biodiversity
100
What happens to a population when it reaches its carrying capacity?
The population levels off and fluctuates near the carrying capacity.
100
What human activity leads to habitat loss and increased CO2?
Deforestation
100
What two products are made during photosynthesis?
Oxygen and Glucose
100
What kind of natural disaster can remove nutrients like nitrogen and phosphorus from soil?
Wildfire
200
What is the maximum population size an ecosystem can support?
Carrying Capacity
200
The life cycle of a mosquito depends on the availability of standing or slow-moving water. If there is a lower-than-normal number of mosquitoes present in one area, which limiting factor is most likely the cause?
A severe drought
200
What does an artificial reef (like a sunken ship) provide to an ecosystem?
Habitat for algae and small invertebrates
200
Which product of photosynthesis is also needed for cellular respiration?
Glucose
200
The diagram shows the process of upwelling along the coast of South America.
Westward blowing trade winds blow the warm surface water from the coast to the ocean. Cool nutrient-rich water from below upwells to the surface. Every three to seven years the trade winds weaken, and an El Niño-Southern Oscillation (ENSO) event occurs. Which is the most likely result of an ENSO event?
- A
decline in the number of cyclones in the Pacific Ocean
- B
increased number of thunderstorms to the South American mainland
- C
decline in the fishing industry because of the change in the aquatic food chain
- D
decline in the number of people scuba diving due to a decrease in the amount of dissolved oxygen
Decline in the fishing industry because of the change in the aquatic food chain.
300
What do we call a factor like water or space that limits population growth?
Limiting Factors
300
What causes a population graph to level off after exponential growth?
A decrease in available resources or increased competition
300
What environmental effect results from burning large areas of rainforest?
Increases CO2 and causes ocean acidification
300
Phytoplankton are plant-like microscopic organisms that float in bodies of water such as the ocean. They take in carbon dioxide during the process of photosynthesis. What would most likely happen if the population of phytoplankton was destroyed?
Greenhouse gases would increase
300
What practice helps reduce environmental harm: using pesticides or recycling?
Reduce, reuse, recylce
400
What cycle describe how carbon move through the air, water, soil, and living things?
Carbon Cycle
400
Give an example of a density-independent limiting factor.
Natural disasters
400
The walnut twig beetle is native to the southwestern United States and Mexico. It is considered an invasive species in the western United States. This beetle can carry a fungus that causes thousand cankers disease in black walnut trees. Thousand cankers disease can be lethal to trees after only a few years of infection.
In 2013, scientists discovered thousand cankers disease in black walnut trees in North Carolina, in the Great Smoky Mountains National Park. These scientists hypothesized that the disease was transported to the area by humans. Which of these statements best supports the scientists’ hypothesis?
- A
The disease is caused by a fungus that is carried by a beetle.
- B
Black walnut trees are susceptible to thousand cankers disease.
- C
People from North Carolina visit the Great Smoky Mountains National Park every year.
- D
Walnut twig beetles were previously found only in the western and southwestern United States.
Walnut twig beetles were previously found only in the western and southwestern United States.
400
What does cellular respiration do with carbon stored in food?
Converts it to CO2 and releases it into the atmosphere
400
Following a massive oil spill in the Gulf of Mexico, oil contaminates the freshwater streams of Louisiana, decreasing the crayfish population. How would this most likely impact the bass (predator) population in local streams?
They would decrease due to declining food supply.
500
What is the term for a species introduced to an area where it doesn't belong, often harming native species?
Invasive Specie
500
How does a food shortage affect predator population like bass?
They decrease due to a loss of prey.
500
If you were to create a new park, what best road design would reduce habitat fragmentation?
The one that crosses the fewest habitats.
500
Lauren is modeling how organisms transfer carbon from the biosphere to the atmosphere. The mechanism of transfer is cellular respiration. Which statement should Lauren use in her model to accurately describe the total masses of carbon and oxygen after cellular respiration?
- A
After cellular respiration, the total mass of carbon increases, and the total mass of oxygen decreases.
- B
After cellular respiration, the total mass of oxygen increases, and the total mass of carbon decreases.
- C
After cellular respiration, the total masses of both carbon and oxygen stay the same.
- D
After cellular respiration, the total masses of both carbon and oxygen decrease.
After cellular respiration, the total masses of both carbon and oxygen stay the same.
500
What would happen to ocean water chemistry after a major rainforest burn?
The ocean becomes more acidic due to an increase of CO2 absorption.