Armed with cameras and cell phones, they were invading the lions' territory in hopes of capturing the perfect photograph. The author uses several verbs to describe the tourists' actions. The connotative tone of these verbs implies that the photographers are

hunters
reporters
scientists
students

Firms use marginal analysis to determine prices by a) changing prices in accordance with information from retailers. b) using comparisons with strong competitors to position prices accordingly. c) examining the effect on revenue of small changes to the price of one item. d) trying to minimize production costs by using better and more efficient methods.

Use the conversion factors to rewrite the distances in different, but equivalent, units. celestial objects distance from the star object a 0.000001877 pc object b 30.06 au object c 778.3 million km

You find a mysterious, dull substance on the ground and pick it up for a closer look. it is powdery, very light, and soft to the touch. the substance is most likely i. an organic mineral ii. a metallic mineral iii. a nonmetallic mineral i only ii only iii only i and ii i and iii