Which of these is the best example of interconnected technological systems? A. A person works up a sweat after going for a run and then cools off by taking a shower. B. A person rides a bicycle over a nail in the road, which causes the bicycle’s tire to burst. C. A person increases the heat setting on a thermostat, which sends a signal that turns on the furnace. D. A person places several different fruits into a blender and then turns on the blender to make a fruit smoothie.

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

Asegment of dna that codes for rna and a protein is a

Are humans interfering with or a part of evolution happening today? find examples of evolution seen in recent history that could be caused by human activity.