A commensal bacterium does not infect its host, which is option D. Details about commensalism can be found below.
<h3>What is commensalism?</h3>
Commensalism is a kind of relationship that involves the sharing of the same environment by two organisms where one species benefits and the other is unaffected.
For example, barnacles on whales is a commensalistic relationship.
According to this question, a commensal bacterium will not affect or harm it's host by infect it neither will it benefit its host.
Learn more about commensalism at: brainly.com/question/14224704
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The correct answer is B. Olfaction; thalamus
Explanation:
In biology, there are five main senses, these are the vision, the audition, the gustation, the olfaction, and the somatosensation or touch. A sensory stimulus is first perceived or collected by different organs, for example, the eyes are those that perceive vision signals and the ears perceive auditory stimuli. Then these stimuli are transferred to the peripheral nervous system and from this to the thalamus, which is a section of the brain that passes information to the cerebral cortex that is is in charge of processing and responding to it.
This occurs with all senses but is slightly different in the case of smell or olfaction, because the sensory signals or stimulus of this does not go to the thalamus but directly to the zone of the brain where it is processed. Thus, all sensory signals excerpt olfaction travel to the thalamus in the brain before the cerebral cortex.
Koalas B. fur color closely matches the eucalyptus bark color. Koala's have fur that is gray to light brown and it helps them camouflage themselves so they cannot be seen.
A BCR is a ratio of the benefits of a project proposal expressed in monetary terms relatives to its costs also expressed in monetary terms all benefits and costs should be expressed in discounted present values. that's all I can think of I'm sorry if it didn't help
Plasma membrane has lots of phospholipids. It is also called phospholipid bilayer
