On a trip to the bay area in San Francisco, Jason saw a sight similar to this image—several shallow ponds with mounds of a white substance in them. Choose the correct word to complete the sentences to explain what this substance is. The sight Jason saw was the non-mechanized process of harvesting
from the ocean by evaporation of seawater. Although
is also extracted from seawater, it is done through the process of electrolysis.

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d