Why does increased global movement of people increase the risk for pandemic flu? a. it decreases the population densities of urban areas. b. it increases the transmission of flu between countries. c. it decreases the responsiveness of national government. d. it increases the evolution of treatment resistant flu virus.

The deserts of the sahara and australia are associated with

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.