What is being referred to in the following definition? a barrier along the open sides of stairways and platforms that prevent falling a. toeboard b. top rail c. guardrail d. banister

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

Lori attended a lecture about the sun, and the presenter had placed this image on the wall. which layer of the sun could this image be referring to?

Based on the graph, how is coal consumption likely to affect future generations? a. the higher our current rate of consumption, the less coal will be available in the future. b. current rates of consumption are irrelevant because new coal will form in the future. c. the lower our current rate of consumption, the more slowly coal will be replenished for the future. d. regardless of current rates of consumption, coal will always be available.