If an object with 80 j of gravitational potential energy is raised twice as high, what would be its new gravitational potential energy? a. 100 j
b. 160 j
c. Can't be calculated without
knowing its weight.

What is the farthest destination to date for a human spaceflight mission?

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

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