Explanation:
Classification systems function in order to organize a group of organisms into smaller groups according to some kind of logic. For example, the most used classifications system in biology is the phyllogenetic, which classifies living beings according to their evolutive affinity.
In the other hand, a dichotomous key is a "guide" used by biologists when they need to indentify an individual. It is organized in several steps regarding some key characteristics in order to guide you to which species/genus/family your individual belongs to. A dichotomous key never provides any kind of trustworthy phyllogenetic information, and should be understood only as a tool.
A Muscle Contraction Is Triggered When an Action Potential Travels Along the Nerves to the Muscles. Muscle contraction begins when the nervous system generates a signal. The signal, an impulse called an action potential, travels through a type of nerve cell called a motor neuron.
It's important because we need the scientists to discover where it is. The Lokiarchaeota is a main cause for infections, and diseases, and if we identify it, and study it, we may know how to cure certain diseases, and how to prevent them.
Answer:
because the germs spread and when other people touch it and are carriers and they will probably get sick too
Explanation:
Well you can mark out a and d.. because cellular respiration uses energy in glucose to make atp
