In this food chain, the spiders are....
Wolves and hawks are at the same trophic level because they..
both live on land
are both large mammals
both eat primary consumers
have similar hunting patterns
Which organisms in this food web can be described as both primary and secondary consumers?
Energy used by producers in a grassland food web is provided by....
In this diagram of a marine food web, which term describes the sea turtle?
The diagram represents different levels of marine food pyramid. Between which two levels is the greatest amount of energy transferred?
R and Q
S and R
T and S
U and T
According to this food web, which of the following are omnivores?
This pyramid of numbers indicates number of organisms in a community. Which situation below would form a pyramid showing more consumers than producers?
small plot with 500 corn plants and 100 grasshoppers
one pond with 300 producers and one snake
11,000 m squared lake with 75 fish and one alligator
one giant oak tree with 10,000 insects and 10 lizards
The diagram shows relationships in an ecosystem. What do the arrows represent?
the direction of population migration
differences in dietary habits
progressively smaller organisms
the direction of energy flow
Insecticides help humans compete with insects for a resource. Which resource is most likely to be preserved for humans through the use of insecticides?
In this food pyramid, which level contains the greatest amount of energy?