A pig needs food, water, and shelter. Like humans:)
Answer;
-Cervical enlargement
Explanation;
-The spinal cord has an obvious enlargement in the cervical region, called the cervical enlargement, where the cell bodies controlling the upper limbs arise.
-It is a spindle-shaped swelling of the spinal cord that extends from the third cervical to the second thoracic vertebra, with maximum thickness opposite the fifth or sixth cervical vertebra, consequential to the innervation of the upper limb.
Answer:
Explanation:
Natural selection is process of differential survival and reproduction of the organisms which have better phenotypic traits over the other members of the same species. These traits help the organism to survive in unfavorable conditions and they are passed from the parents to the offsprings and through successive generations of the species.
For example, the development of long neck of the giraffe helped them to grab leaves from tree tops.
To figure the length<span> of one </span>cell<span>, divide the number of </span>cells<span> that cross the diameter of the field of view into the diameter of the field of view. For example the diameter of the field is 5 mm and you </span>estimate<span> that 50 </span>cells<span> laid end to end would cross the diameter, then 5 mm/50 </span>cells<span> = 0.1mm/</span>cell<span>.</span>