Which term refers to the total number of cases, both new and alreadyexisting, in a given area or population during a given period of time? A: prevalence: B: incidence, C: epidemic, D: endemic

Cargo carrying weight capacity of cargo ships can be measured by ( ) . A: GT B: Suez Canal GT C: NDW D: NT

Over the last century, paleontologists have used small differences between fossil specimens to classify Triceratops into sixteen species. This classification is unjustified, however, since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time. Which of the following, if true, would enable the conclusion of the argument to be properly drawn A: Not every species that lived in a given area is preserved as a fossil. B: At least one individual of every true species of Triceratops has been discovered as a fossil specimen. C: No geographical area ever supports more than three similar species at the same time. D: In many species, individuals display quite marked variation. E: (E) Differences between fossil specimens of Triceratops that came from the same area are no less distinctive than differences between specimens that came from different areas.

What is meant by the "unused portion of K"? A: the density-dependent growth rate of a population B: the total number of resources available to a population C: the number of organisms still left to populate an environment D: the maximum number of organisms tha an environment can support

With the help of technicians, solar______ can be installed without damaging the roofs. A: panel B: system C: lease D: capacity