Most ecologists believe that the average global carrying capacity for the human population is between

TLS Online TPP Program

#Question id: 12137

#Unit 10. Ecological Principles

Dwarf mistletoes are flowering plants that grow on certain forest trees. They obtain nutrients and water from the vascular tissues of the trees. The trees derive no known benefits from the dwarf mistletoes. Which of the following best describes the interactions between dwarf mistletoes and trees?

TLS Online TPP Program

#Question id: 12138

#Unit 10. Ecological Principles

The oak tree pathogen Phytophthora ramorum has migrated 650 km in ten years. West Nile virus spread from New York State to 46 others states in five years. The difference in the rate of spread is probably related to

TLS Online TPP Program

#Question id: 12140

#Unit 10. Ecological Principles

In some animal species, social organization involves the establishment of a system of ordered social rank instead of the occupancy of territories. Such a system of ordered social rank is referred to as a __________. 

TLS Online TPP Program

#Question id: 12141

#Unit 10. Ecological Principles

The density and spacing of individuals within suitable habitat and the proportions of individuals in each age class comprise a population's __________. 

TLS Online TPP Program

#Question id: 12142

#Unit 10. Ecological Principles

Regarding the geographic range of a species, which of the following statements is true? 

TLS Online TPP Program

#Question id: 12143

#Unit 10. Ecological Principles

The __________ states that two species cannot coexist indefinitely when the same resource limits both species.