B. Crystalline structure
C. Types of chemical elements
And
D. Amounts of chemical elements
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 air spaces occur in Spongy mesophyll tissue.There are large spaces in a leaf because it is for storing water and carbon dioxide which will be used for photosynthesis. The large air spaces are usually found in the spongy layer of the mesophyll. The arrangement of this spongy mesophyll facilitates the movement of gases through the mesophyll. Directly beneath each stomate at the leaf surface there is usually a small air space, called a stomatal chamber, where no mesophyll cells are present. This also aids in gas exchange.
The phenotype of the offspring would be: pink.
The offspring(F1 generation) have a different phenotype than the true-breeding parents( red and white) because this is this is an example of incomplete
dominance. The F1 generation is a result of a blend between the phenotypes of its parents.
Answer:
Mutation and sexual reproduction
Explanation:
<h2>HOPE IT HELPS </h2>
