The word that goes on to the gap is "cells"
Hope it helped!
I believe proteins would be the correct answer, but of course I just learnt this stuff 2 weeks ago. xD
There are two main types of research, which could be classified as manipulation and observation. Both types are fundamental in research.
<h3>Empirical research and evolution</h3>
Evolution is the subdiscipline in biology that studies how organisms change to adapt to challenging environmental conditions.
Empirical research refers to any scientific investigation in which conclusions are drawn from empirical evidence.
This type of research (empirical research) is based on observation of the natural world and experimental procedures.
Learn more about empirical research here:
brainly.com/question/6862874
If the stimulus reaches the threshold an action potential will be generated. If the stimulus doesn't reach it no action potential will be generated. If the stimulus will be stronger the action potential will have the same amplitude. The refractory period makes it harder to generate an action potential so they decrease the frequency of action potential production.
Answer:
2.Population, community, ecosystem, biome is the order of the individual numbers
Explanation:
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