mariesavannah77 mariesavannah77

25-04-2018
Physics

contestada

Which causes the production of vitamin D in humans?

A. ultraviolet rays
B. radio waves
C. gamma rays
D. X-rays

Respuesta :

cupcake225 cupcake225

25-04-2018

B radio waves is the answer

Answer Link

gardenslumber gardenslumber

25-04-2018

it's A because there used for tanning

Answer Link

Otras preguntas

Why does electronegativity decrease down a family? A: The sizes of the atoms increase. B: The sizes of the atoms decrease. C: The total positive charge increas

what is the pythagorean theorem formula

Write five sentences comparing things in your school today versus how they were when you were a child. Example: Hoy hay ... pero cuando yo era niño/a ...

one x-intercept for a parabola is at the point (-3,0). Use the factor method to find the other x-intercept for the parabola defined by this equation: y= -x^2 -

bill earns $40 more than half Ritas weekly pay. If their combined pay for a week is 520. what equation can we use to solve for ritas weekly pay ?

Which part of the brain is used for hearing understanding language and storing memories?

A way of buying, in which you can purchase goods or services and pay later, is called: A credit B comparison shopping C savings

a gallon of paint will cover 300 square feet surface area. how many gallons are needed to cover a rectangle surface 600 feet by 20 feet?my answer is 4 is my ans

Mary's backpack weighs 6 pounds. How many kilograms does Mary's backpack weigh? Round your answer to the nearest hundredth. (1 kilogram = 2.2 pounds)

Help with this math question please