Apart from the helium nuclei and energy that are produced in thermonuclear reactions between protons in the center of the Sun, what are the other byproducts

Adouble-slit experiment is performed with light of wavelength 600 nm. the bright interference fringes are spaced 1.8 mm apart on the viewing screen.what will the fringe spacing be if the light is changed to a wavelength of 400 nm? ?

What do butterflies have on their feet which allows them to sense different strengths and types of nectar? a.mechanoreceptors b.acoustic receptors c.substratum receptors d.chemoreceptors

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic