What metallic element is sometimes used in flares and flashbulbs because it burns with a bright, white light?

Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided

Each nephron is made up of capillaries that form the __ sweat glands bladder glomerulus ureter

You have trained year for a marathon. in your first attempt to run a marathon, you decide that you want to complete this 26-mile race in 4-5 hours. a. what is the length of a marathon in kilometers (1mile= 1.6 kilometers). b. what would your average speed have to be to complete the race 4.5 hours? give your answer in kilometers per hour.