When a volcano erupts, it not only releases magma, but also a great deal of heat, gas, and ash. What effect is a volcanic eruption most likely to have on the atmosphere?
-The gases could absorb more light energy in the atmosphere.
-The ash could cause less light to be scattered in the atmosphere.
-The gases could rapidly thin out in the atmosphere and have no effect.
-The ash could circulate in large quantities in the atmosphere for decades.

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Below are the three main organs that make up the plant body. what is the main function of the structure that is identified as b in the picture above? it anchors the plant.it produces food.it absorbs nutrients.it supports the plan