How can volcanic eruptions cause the average temperature on the planet to drop the ash in the atmosphere blocks the sunlight volcanic ash insulates the earth volcanic ash is hot volcanic eruptions cause the average temperature to increase

Choose all the answers that apply. ionic compounds dissolve easily in water do not dissolve in water have low melting points have high melting points conduct electricity when melted

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

State one important difference between a physical change and a chemical change?