Some birds are known as honey guides because they may be followed by humans to wild beehives. When the human take honey from the hives, the birds are able to feast on the honey and bees, too. This type of relationship can best be described as what?
What is mutualism?
100
Is soil type an abiotic or biotic factor to an earthworm?
What is abiotic factor?
100
If 10,000 units of energy are available at the bottom level on an energy pyramid, what is the number of energy units lost after three steps are taken?
What is 9990?
100
Is a food chain or a food web an easier way to diagram relationships between many species?
What is food web?
100
Which nutrient has only a short term biogeochemical cycle?
What is Nitrogen?
200
Cougars are predators that often eat weekend or diseased animals. This is a description of the ________ of cougars.
What is niche?
200
A researcher is studying reproduction in dandelion. She decides to measure only soil temperature. Why is this a poor study design?
What is "she left out all biotic factors"?
200
If a coyote eats a cat that ate a mouse that ate some grassy, what level consumer would the coyote be considered?
What is third?
200
Where would you most likely find autotrophs that get their energy from chemical compounds? (swamp sediments, antarctic pools, grassland soil surfaces, or desert rocks)
What is swamp sediments?
200
Bacteria taking nitrogen from the air and converting into a form usable by plants is called what?
What is nitrogen fixation?
300
What type of mutualism is a flea involved in?
What is parasitism?
300
A group of whales living together is called this.
What is population?
300
In an energy pyramid, which level has the least number or organisms, the top or the bottom?
What is top?
300
Are biogeochemical cycles and energy flow through ecosystems the same thing?
What is no
300
If a plant is growing slowly, what is one nutrient you can try adding (not water)?
What is nitrogen?
400
What information could be included in the description of a grasshopper's niche, but not in a description of its habitat?
What is what it eats?
400
This allows the flow of energy through an ecosystem.
What is predation?
400
What is the ultimate source of energy in most energy pyramids?
What is the sun?
400
To show the amount of living material at each trophic level of a food chain, you could use a pyramid of what? (hint: living material)
What is biomass?
400
What two nutrients does manure add to crops?
What is increases nitrogen and phosphorus?
500
Organisms with overlapping niches probably have which type of relationship?
What is competitive?
500
When mosquito larvae are eaten by fish, are the fish an abiotic or biotic factor affecting the mosquito population?
What is biotic?
500
Is the length of food chains fixed or does it vary with ecosystem?
What is varies?
500
Decomposers recycle what from other organisms?
What is nutrients?
500
Water, carbon and nitrogen are released back into the atmosphere during this process.