Answer:
Explanation:An example of such a substance is table salt. The chemical formula for table salt is NaCl. ... That there are no numbers present in the chemical formula means that there is one atom of each element present in the molecule. The Periodic Table reveals that Na is the symbol for sodium, and Cl is the symbol for chlorine.
Swelling around the neck due to deficiency in iodine
Answer:
Option A,
Explanation:
As per the conventional study belief’s, there were six main emotions – disgusted, happy, sad, angry, fear and afraid.
But with the later studies conducted at Glasglow, it became important that there are primarily four major emotions i.e Happy, Sad, Angry and afraid as it was concluded that anger and disgusted & fear and surprise have similar characteristics and they must be removed.
Hence, option A
Answer:
the animals die due to the chemicals and stuff in the water
Explanation:
Reproductive isolation must happen
