What is the singnificance of transcontinental layer such as the chalk beds

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Residential construction is expanding in florida, the expansion has caused fragmentation of habitats, one of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear and pool panther, which will be the most immediate local result of this fragmentation? 1)large predators will become extinct 2)decrease in middle sized predators 3)increase in population of top carnivores 4)increase in population of prey species

Which characteristics are typical of a human population in the postindustrial stage?