In which of the following scenarios does skin help to maintain body temperature? When jumping into cold water, one’s skin releases body heat into the water.
While walking during a hot summer day, sweat on the skin evaporates and cools the body.
After accidentally touching a hot cookie sheet, a blister forms on one’s finger where all the heat entered the body.
After a long run, an Olympic athlete stretches out her arms and legs.

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

How many copies of each chromosomes should be present in each of the 4 final haploid versions of gamete?

Modern whales developed their traits through natural selection what occurs during the process of natural selection