What is the distance of the sun from earth?

Which two nations are doing the most to combat their environmental issues?

In shallow water at the beach, manuel saw an animal whose body was protected by hard plates. its body also had radial symmetry. the animal pumped water into its tube feet to move. which invertebrate group does this animal belong to? a. mollusks b. echinoderms c. sponges d arthropods

What is the most effective approach the government can take to keep the air clean? create and enforce regulations that limit fossil fuel burning by industries use funds to understand why smoke and mold are causes of outdoor air pollutants educate people about the threats to outdoor clean air from visible forms of air pollution modify regulations under the clean air act by including expensive options to reduce air pollution