Answer:
Justify given in explanation:
Explanation:
When there is environmental pollution it adds dust to water soil and sound because when pollution is added to water the water becomes polluted same on air, soil and sound. Which causes the soil to absorb polluted water and the plants that absorb oxygen doesn't get dust-less oxygen and as a result there growth is not good
Each muscle is surrounded by a connective tissue sheath called the epimysium. ... Within the fasciculus, each individual muscle cell, called a muscle fiber, is surrounded by connective tissue called the endomysium. Skeletal muscle cells (fibers), like other body cells, are soft and fragile.
Their mode of fertilization is external.
They lay eggs in the water and there is a chance of destruction of these gametes by water current if they are in less quantity.
So they lay more and more eggs in order to rule out the possibility of destruction of all eggs.
Thus at least some eggs are fertilized by sperm and produce zygote.
