Certain characteristics of some species allow them to achieve high population density. How do resource specialization, body size, cooperation, and being invasive affect the organisms' ability to achieve high population densities?

A. These characteristics have no impact on population density.

B. Resource specialization, small body size, cooperation, and being invasive all contribute to higher population densities.

C. Resource specialization and cooperation decrease population density, while large body size and invasiveness increase it.

D. These characteristics are only relevant for species in captivity, not in the wild.

Factors like resource specialization, small body size, cooperation, and being invasive indeed contribute to higher population densities by improving survival and reproductive rates, and optimizing resource use.

Explanation:

The student is inquiring about how certain characteristics like resource specialization, body size, cooperation, and being invasive influence an organism's ability to achieve high population densities. Resource specialization can lead to higher population densities because specialists are often more efficient in utilizing specific resources than generalists. Small body size typically allows for higher densities, as smaller organisms require fewer resources and can live in closer proximity. Cooperation among individuals can enhance survival and reproduction rates, leading to increased density. Additionally, invasive species often achieve high population densities because they may have few natural predators and can exploit resources effectively in new habitats. The accurate answer for the student is b) Resource specialization, small body size, cooperation, and being invasive all contribute to higher population densities, as they enhance survival and reproduction while optimizing resource use.