Hi there!
A prezygotic isolating mechanism is a mechanism that causes something to happen, not allowing the organisms to breed before fertilization. I'll explain each one for you.
A - That is postzygotic because the organisms were not stopped before fertilization. The result is a sterile organism.
B - Again, that is postzygotic because the organism was produced.
C - This is prezygotic! The sperm dying shows that something is in action to prevent fertilization, meaning that it cannot happen.
D - Fertilization was successful, so it is postzygotic.
ANSWER:
C - the sperm dies when it reaches the female tract
If you need help with any more problems, feel free to message me and I'd be more than happy to help you work through them and provide explanations.
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
Reduce the amount of carbon, fossil fuels and methane in the atmosphere.
Answer:
what are the options?
may I get brainliest please?
Its B clearing and farming. Because if you think of it when someone clears trees and bushes they most likely won't come back.
What is a station model used to create?
The correct answer is D. surface weather map
Station models are illustrations that shows the weather occurring at a given reporting station. These are symbolic illustrations. These models were created to fit a number of weather elements into weather maps.
