<span>The formation of the fertilization envelope (slow-block to polyspermy) requires an increase in the availability of </span>calcium ions.
Slow-block to polyspermy is also called cortical reaction. In this reaction, the sperm will be permanently blocked by cortical granules. The release of calcium ion will trigger this reaction.
Red Orange Yellow Green Blue Indigo Violet
<---Longest wave length shortest wave length--->
As you went down the colors of the rainbow the wave length got shorter or faster.
A)
learn about the universe and the laws of nature.
B)
design new scientific instruments.
C)
make new inventions and processes to benefit humans.
D)
make new scientific discoveries.
I believe the correct answer is C, but I'm 100% on this. Hope this helped though!
D, as they all have to be nonliving factors.
I hope this helps and best of luck,
Carbono Konopia :)
