Q: Pure nonpolar covalent bonds exist only between what? Read this paragraph and choose the correct option from the provided answers: Pure nonpolar covalent bonds exist only between two identical atoms. The H-H bond would be 100% covalent, because there is no difference in electronegativity between the two atoms. Choices: - two altered atoms - two producing atoms - three altered atoms - two identical atoms A:
two identical atoms

Q: Reducing the production of what gas, or removing it from the air, are practices that could reduce global warming? Read this paragraph and choose the correct option from the provided answers: Efforts to reduce future global warming mainly involve energy use. We need to use less energy, for example, by driving more fuel-efficient cars. We also need to switch to energy sources that produce less carbon dioxide, such as solar and wind energy. At the same time, we can increase the amount of carbon dioxide that is removed from air. We can stop destroying forests and plant new ones. Choices: - helium - hydrogen - oxygen - carbon dioxide A:
carbon dioxide

Q: Light is energy that travels in the form of what type of wave? Read this paragraph and choose the correct option from the provided answers: Light is one type of electromagnetic radiation . Light is energy that travels in the form of an electromagnetic wave. Figure below shows a diagram of an electromagnetic wave. An electromagnetic (EM) wave has two parts: an electric field and a magnetic field. The electric and magnetic fields vibrate up and down, which makes the wave. Choices: - seismic - molecular - particle - electromagnetic A:
electromagnetic