When exposed to sunlight, melanocytes produce the pigment melanin. Melanin granules cluster together in keratinocytes to protect DNA in the nucleus
Answer:
Development of the human heart during the first eight weeks (top) and the formation of the heart chambers (bottom). In this figure, the blue and red colors represent blood inflow and outflow (not venous and arterial blood).
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It is referred as <span>zone of proximal development. The zone of proximal development enables a person to distinguish what he or she is capable of with help towards others and without it. It is somehow related to the given sentence above where it shows how children can do on their own and with the help of another person.</span>
Answer:
D) airway obstruction
Explanation:
Referring to the "Types of Disasters" page published by the Red Cross online (www.redcross.org/get-help/how-to-prepare-for-emergencies/types-of-emergencies.html), there are guides for disasters involving flooding, hurricanes, and earthquakes. However, there are no guides for an airway obstruction.