In order, the levels of organization within an ecosystem.
What are organism, population, community, ecosystem?
100
An example of each of the levels would be:
1. Single Prairie Dog
2. All prairie dogs
3. Every prairie dog in one area
4. Coyotes, bugs, and prairie dogs in one area
What is:
1. An organism
2. A species
3. A population
4. A community?
100
This would be the best choice for sampling the population of daisies in a meadow.
What is the quadrat method?
100
An example of a biotic and abiotic factor.
What is an animal and a rock?
100
Birth rate, death rate, immigration, and emigration are all factors that can affect this.
What is population size?
200
Three methods of determining population size
What are direct and indirect observation, sampling, and mark-recapture?
200
These are things an organism needs from its habitat.
What are food to grow, a place to live, and a reproductive mate?
200
A negative example is smog, but a positive example is the blockage of harmful uv rays.
What are examples of ozone?
200
These are three methods of disposing waste.
What are incineration, landfills, and recycling?
200
An example would be a leech attached to the skin of another animal.
What is parasitism?
300
Due to competition for the limited resources necessary for survival.
Why can't two species occupy the same niche?
300
An example of each would be:
1. Two birds eating the same type of seed
2. A cat chasing and eating a mouse
3. A flea living on the skin of a dog
What is:
1. Competition
2. Predation
3. Symbiosis
300
This is the largest level of organization within a habitat.
What is an ecosystem?
300
Number of individuals divided by the area.
What is the equation to determine population size?
300
The most common component of American solid waste.
What is paper?
400
These are examples of results of poor soil management.
What are erosion, nutrient depletion, and desertification?
400
Litter is on the top, next is topsoil, third subsoil, and finally bedrock.
What are the layers of fertile soil?
400
Causes of this environmental factor include plants rotting, soil losing nutrients, and fish dying to water content changing.
What are some effects of acid rain?
400
Two examples of water pollution.
What are household waste (sewage) and oil? (Also heat, sediments, chemicals, gasoline.)
400
The percentage of fresh water available for agriculture and drinking on the earth.
What is 1%?
500
This results when heat is trapped near the earth's surface and keeps the temperatures warm enough for life.
What is the greenhouse effect?
500
These are examples of solutions to poor soil management.
What are planting deep rooted plants to help erosion, rotating crops to aid with nutrient depletion, and reduce grazing to stop desertification.
500
Effects of these factors include too little food for all members, a lack of space for shelter, and deaths due to sudden weather changes.
What are some examples of limits to population size?
500
The common environmental cause of metals corroding or disintegrating.
What is acid rain?
500
This material is prevented from reaching groundwater by a layer of plastic or clay within a sanitary landfill.