There aren't many similarities between mutualism and parasitism, except for the fact that there are two or more creatures involved in the whole process.
The differences are many, the most important of which is the fact that mutualism involves two beings living in harmony, where they both have something to gain from that symbiosis. On the other hand, parasitism means that one being gains everything from its host, whereas the host is just being used, there is no gain for it in the whole process.
Hope this helps! :)
Answer: Decreased levels of melatonin
Explanation: Melatonin is a substance that is excreted at night and by which the brain sends signals that one should sleep, that is, a man / woman is feeling sleepy. When melatonin secretion decreases, the alertness increases, as is the case with Colby. Melatonin levels decrease at the base of the brain signal regardless of whether or not Colby slept enough the previous night. Feeling tired will induce some other receptors and consequent signals from the brain, but a natural decrease in melatonin throughout the day occurs normally.
Answer:
B.
Explanation:
The statement which is true about the Russian Constitution is that it gives its people freedom to speech.
In Article 29 of the Russian Constitution, states the the citizen of Russia shall be guaranteed the freedom of ideas and speech. The freedom of expression and speech is the slowly eroding freedom guaranteed by the Russian constitution.
Therefore, option B is correct.
