Answer:
Arthropods have a tough, non-living outer shell called exoskeleton, which protect their soft bodies while echinoderms have living endoskeletons, which develops within the deeper skin or body tissues and act as their protective covering.Explanation:
<span>Karotypes are best prepared using cells that have been arrested in metaphase. In metaphase or prometaphase, the chromosomes are most condensed.</span>
Most cells have a membrane, though some don't.
The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion. Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. The process of digestion has three stages
Answer carbon dioxide
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