This is an abiotic factor. Abiotic means non-living and these are a collection of organisms that make up a community.
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<span>The correct answer is d: detached earlobes</span>
The phenotype is the result of genotype and its interaction with the environment. The phenotype is an observable characteristic of an organism's trait, such as its morphology. So, in this case, morphological characteristic of the earlobe is that it is detached.
The theoretical resolution limit of a light microscope being used examine a sample while it is in oil is 261 nm.
A light microscope's resolution is limited to between 0.4 and 0.7 micrometers, or half the wavelength of visible light. The objects are at most 0.2 m away when we can see green light (0.5 m).
Using a green light of 514 nm, an oil immersion objective with such a NA of 1.45, and a condenser with a NA of 0.95, the (theoretical) limit of resolution is 261 nm. As was already said, more detail can be resolved when imaging a specimen with a shorter wavelength of light in a microscope.
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D - the endoplasmic reticulum (ER)