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.
Medical doctors have the power to keep the society healthy or not-they can save lives. Without medical doctors, the death rate would be much higher then it is today. People would die younger as well.
Hope this helps!
Answer:
B
Explanation:
Countries like China, USA, and India have some of the highest cardiac disease rates. All of these countries are developed or industrialized.
Hope this helped.
