Prokaryotic cells have flagellums. Eukaryotic has a nucleus
Answer:
Once you begin swallowing, the process becomes automatic. Your brain signals the muscles of the esophagus and peristalsis begins. Lower esophageal sphincter. When food reaches the end of your esophagus, a ringlike muscle—called the lower esophageal sphincter —relaxes and lets food pass into your stomach.
Answer: existence of a particular species is completely wiped out from the planet
Explanation: Extinction means that the existence of a particular species is completely wiped out from the planet. It is an irreversible form of damage, since neither a single male and female species member is present to procreate. Endangered, on the other hand, means that a species is nearing extinction.
Answer:
Harmful algal blooms in freshwater lakes and rivers, or at estuaries, where rivers flow into the ocean, are caused by cyanobacteria, also known as "blue-green algae". They can produce hazardous toxins, such as microcystins, a neurotoxin which destroys nerve tissue of mammals.
