What did scientists predict the big bang should have left? a radiation, hydrogen, and helium b radiation, helium, and redshift c redshift, hydrogen, and helium d dust, gases, and particles

Why can blue light and yellow light combine to produce white light? question 17 options: they are both primary colors of light. they absorb each other's wavelengths. because blue, yellow, and white are primary colors. they are complementary colors of light.

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water

Sound is a disturbance that travels through a medium as a