Answer:
the 3rd option - Jessie is wearing a red shirt because her blue one got dirty.
<h2>Answer </h2>
Option D - The Linnaean system of classification used a nested hierarchy to sort organisms into groups based on similarities and differences in their characteristics. kingdom → phylum → class → order → family → genus → species.
<u>Explanation</u>
The family is missing from the Linnaean system of classification that is used for nested hierarchy. Carolus Linnaean worked for the taxonomy. It is the system of classifying and naming organisms. This system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species. Linnaeus presented us with a uniform way to identify species called binomial nomenclature.
Crossed-extensor reflex prevents you from falling when you suddenly lift one foot off the ground in response to pain.
- A withdrawal reflex is the crossed extensor reflex. In the withdrawing limb, the extensors relax while the flexors contract, but in the other limb, the opposite happens.
- This can be seen, for instance, when someone steps on a nail; the affected leg pulls away, while the other leg bears the weight of the entire body.
- Contralateral means that the crossed extensor reflex takes place on the side of the body that is opposite from the stimulus.
- Afferent nerve fiber branches travel from the stimulated side of the body to the opposite side of the spinal cord to cause this response.
- They make connections with interneurons there, which then stimulate or inhibit alpha motor neurons to he muscles of the contralateral limb.
learn more about Crossed-extensor reflex here: brainly.com/question/23243906
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