Answer: The correct option is 
Explanation:
According to the Bronsted Lowry conjugate acid-base pair, an acid is a substance that donates protons and a base is a substance that accepts protons.
From the given options, represents a Brønsted Lowry base as it is accepting 
and 
represents a Brønsted Lowry acid as it is donating .
Answer:
limiting factors
Explanation:
The ecological optimum represents the value of the factors within the ecological valence at which the life processes of a species take place best. The upper and lower limits of an ecological valence are its maximum and minimum. Beyond these limits, physiological processes are interrupted and death occurs.
Answer:
1.
✔Deep sea trenches
✔Mountains
✔Faults
2.
B. It is an ancient supercontinent
Explanation:
The above answers are correct.
The convergent plate boundary is known to be an area on Earth where subduction occurs. It is a place where two or more lithospheric plates collide. This convergent plate boundary is characterized by deep ocean trenches, island arcs, mountain ranges, faults and volcanoes.
Pangaea is known to be a supercontinent that actually incorporated almost all the earth's landmasses and it is said to have existed during the late Paleozoic and early Mesozoic eras. It is revealed that over 150 million years the supercontinent began to break apart.
<span>The septum is the wall that separates the left and right sides of the heart. If there is a hole in the wall between the two ventricles, it is called a ventricular septal defect (VSD).</span>
