Nothing :) maybe one day there will be
Answer:
it was a SEA STACK.
Explanation:
A sea stack is formed from cliffs. It is a part of the cliff that breaks off from the original structure because its connecting portion will erode and be gone due to weathering and constant barrage of waves on the cliff sides.
Answer:
Option D, Gastric Juices
Explanation:
The second line of defense is a non specific defense mechanism in which no specific individual is targeted but all invaders are killed in general way. Some common mode of second line of defense are - Phagocytic cells (white blood cells), inflammatory responses, macrophage system etc. The second line of defense comes into action when the invader has surpassed the first line of defense which include either physical barrier like skin, mucous membrane, hair, cilia etc. or chemical barriers like gastric juices, saliva, Hyaluronic acid etc.
Hence, gastric juice does not belong to second line of defense.
Thus, option D is correct.
Living organisms needs water to survive. fresh water also carries fresh nutrients.