14 should be B if I can remember correctly, 15 is C
Answer:
Answer is false.
Explanation:
Countershading is a form of way of camouflage, where the top of an organism is dark colored and the bottom is light colored to avoid being seen by predators.
It is mostly found in marine organisms.
Three ways I can come up with are increasing the temperature, increased the amount of solvent, and using a solvent with similar polarity as the solute.
I think the answer would be d because i think thats the answer.
Numerous barriers can prevent sperm from reaching and fertilizing the egg, this can be that the Sperm may be defected, or lack the required number of mitochondria needed to help move the sperm. Also, if sperm had already fertilized the egg, there is a change that takes place to the membrane surrounding the egg preventing further sperm from fertilizing.
