what does the author imply when he writes that the GDP figure.. “looks hard, but it was arrived at by computing a staggering set of rather soft variables?

In north america, most winter storms form when cold, dry air from interacts with warm, moist air from

Why are shark population in decline worldwide?

Food can come from sustainable or unsustainable resources. why has the united nations suggested that bugs could be a better source of food than animals like pigs or cattle?