Answer: Option B.
Neural crest and peripheral nervous system.
Explanation:
Neural crest are bilateral paired cells of the neural tube that arise from the ectoderm layer of the embryo. Thesescells move to different part of the body and differentiate into various cell types like melanocytes,cartilage and bone, smooth muscle, craniofacial, neurons, gangalia e.t.c. The neural crest running through neural tube develop into peripheral nervous system after birth. Peripheral nervous system consist of neurons and gangalia outside the nervous system The peripheral nervous system connect the central nervous system to organs, skin and limbs.
Answer:
Some locations are more prone because of their geographical characteristics like tectonic plates meeting or the activity of volcanoes these are both likely to cause earthquakes.
I believe it is the production of chlorophyll. Respiration occurs in all living cells including leaves.
Answer:
to be honest i don't know sorry i couldn't help out
Explanation:
<span>This includes about 3,000 species in North America. Biologists and naturalists believe that there are many more species of spiders still to be identified and named. The 35,000 species of spiders in the Order Araneae are grouped into three sub-orders and seventy different families.</span>