Which structure in the figure below is commonly injured by people inserting cotton swads or other objects into their ears?

a) structure d

b) structure a

c) structure c

d) structure b

What is an endocrine function? (apex) a.esophageal glands release mucus into the esophagus b.salivary glands release saliva into mouth c.swear glands release sweat to the skin d.the pineal gland releases melatonin into the bloodstream

This is the main structural axis of the plant that supports leaves, flowers and fruits; transports fluids; stores nutrients and produces new tissue.

How many copies of genes do gametes have?