Surprisingly, an octopus has three hearts. Two of the thee are branchial hearts pump blood through each of the two gills, while the third is a systemic heart that pumps blood throughout the body. Pretty cool right?
The answer is d
hope this helps
The sky is blue because blue<span> light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. </span>Blue<span> is scattered more than other colors because it travels in shorter and smaller waves. This is why we see a </span>blue sky most<span> of the time. Hope this helps!</span>
The most important thing is to try and extinguish a fire if a fire extinguisher is near. If not, they second most important thing is to rush out of the lab using the fire escape route and call the local fire department which will then handle the situation.