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T or F: Energy for most organisms originates from the sun.
true
T or F: Energy flows from heterotrophs to autotrophs.
False. It flows from autotrophs to heterotrophs
T or F: Energy is most often released as light from an ecosystem.
False. It is released as heat.
T or F: Energy levels increase toward the top of the food chain.
False. It decreases.
A fish protecting a shrimp, who builds a burrow for the pair to share would be an example of which symbiotic relationship?
mutualism
____________ is the total mass of living matter at each trophic level.
biomass
Approximately ___% of the energy at each level is used up or lost as heat, leaving only __% of energy to be stored and passed to the next level.
90/10
Each step in a food chain or food web is called a…
Trophic level
T or F: Oak trees and mushrooms are two types of forest autotrophs.
False, mushrooms are heterotrophs
Biotic or abiotic: an ocean current of cold water
abiotic
Biotic or abiotic: a polar bear on an ice floe
biotic
Biotic or abiotic: fungi and moss on a rotting log
biotic
Biotic or abiotic: a forest of deciduous trees
biotic
Suppose two leaf-eating species animals live in a habitat where there is a severe drought will probably have what kind of relationship?
competitive
Give an example of a predator-prey relationship in our community.
Answers vary. Coyote and deer
Give an example of a competitive relationship in our community.
Deer and rabbits compete for grass
