Receptors which provide animals with information from the external environment are located in ears, tongue, eyes, and the nose. These are all receptors that can be found in our sensory organs and provide us with feedback from our nearby environment and the stimuli on which we should be alerted towards.
Answer:
they mutate and become immune to modern medicine
Explanation:
The answer is first to last with the labels going in and out of order to get an explanation
A concentration gradient must exist. hope this helps
The four terrestrial planets, Mercury, Venus, Earth, and Mars, are all much closer together compared to the distances separating the outer planets (anything beyond mars)
