What is a way that humans enjoy acute stress ?

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last

What causes darkening of the skin as melanin production increases

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