Chickadees were given an opportunity to store seeds in 72 possible storage sites consisting of holes drilled in small trees that had been placed in an aviary. Typically, the seeds were placed in only 4 or 5 storage sites. The chickadees were then removed from the aviary, the seeds removed from the storage sites, and each hole covered. A day later, the chickadees were returned to the aviary and they spent nearly 5 times as long pulling at the covers on storage sites than at the covers on sites where they had not stored food. This experiment indicates that chickadees

TLS Online TPP Program

#Question id: 13176

#Unit 10. Ecological Principles

Coral reefs can be found on the southern east coast of the United States but not at similar latitudes on the southern west coast. Differences in which of the following most likely account for this?

TLS Online TPP Program

#Question id: 13177

#Unit 10. Ecological Principles

Deserts typically occur in a band at 30 degrees north and south latitude because

TLS Online TPP Program

#Question id: 13178

#Unit 10. Ecological Principles

Turnover of water in temperate lakes during the spring and fall is made possible by which of the following? 

TLS Online TPP Program

#Question id: 13179

#Unit 10. Ecological Principles

In temperate lakes, the surface water is replenished with nutrients during turnovers that occur in the

TLS Online TPP Program

#Question id: 13180

#Unit 10. Ecological Principles

Which of the following is responsible for the summer and winter stratification of deep temperate lakes?

TLS Online TPP Program

#Question id: 13181

#Unit 10. Ecological Principles

Generally speaking, deserts are located in places where air masses are usually