question 12 part a is hydrogen bonds
and 13 is because helium is a noble gas
hope it helps
Answer: vesicular breath sounds is heard on the throat below the larynx,over the sternum and at the triangle of auscultation.
Explanation:
Vesicular breath sounds are soft low pitched and normal sounds that is heard in the periphery of the lungs. It has greater intensity during inspiration phase than expiration phase. This is caused by accumulated fluid or air between the chest wall.
Answer:
Cone-bearing conifers, or pinophyta, are classified as gymnosperms (naked seeded) because their ovules and seeds are not enclosed within ovaries or found within protective fruit coverings.
Explanation:
<em>Hope</em><em> </em><em>this</em><em> </em><em>helps</em><em> </em>
<em>Crown</em><em> </em><em>me</em><em> </em><em>as</em><em> </em><em>brainliest</em><em>:</em><em>)</em>
The correct answer is option C. Endocrine glands secrete hormones into the bloodstream because endocrine glands are ductless and the exocrine glands have ducts so they secrete their hormones into the ducts.
Since we see that the only one that results in two compounds is a, that is teh correct answer.
Answer: <span>A. HNO3 (aq) + KOH (aq) → H2O (l) + KNO3 (aq)</span>