Gwen is researching the effects of a small asteroid impact in an area that has started to regrow after being hit ten years ago. she considers the event to be a long-term change because the species of plants that were present had to start completely over from seeds after all of the plants in the area were killed by the impact. what is the error in gwen’s thinking?

as technology advances, new experiments often expose problems in accepted theories. c

hope i

-lavira: )

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.