When a biologist counts the number of zebras in a population each year and notices an increase in the zebra population, this would be an example "of <span>observation"</span>
Arthropods are a group of organisms which possess an exoskeleton, <span>jointed appendages, and segmented bodies. This group mostly includes insects, arachnids, and crustaceans. Therefore, the answer to the question above would be option C: jointed appendages. Hope this helps.</span>
Guessing you mean "impulse".
It means to have a sudden strong desire to do something or a small amount of energy that moves from one area to another.
Hope this helps.
