Answer:
Explanation:
pig feeds only because it supplies amino acids necessary to the animal. But of the total amino acids in the diet, only the digestible amino acids are biologically available to the animal
C. Solids.
Because for what i know, particles of a solid are hard to separate as there are strong intermolecular forces holding them together
Answer:
Personally, i think this model is wrong because the arrows point that carbon dioxide enters the lungs and leaves as oxygen which is totally the opposite, but he or she has showed that the oxygen breathed in is used in the oxygenation of the blood. I may be wrong but it doesn't seem right if you think about it. But if you look really hard at it, the oxygenated blood changes it to carbon, and then carries it back to the lungs to be inhaled.
Explanation:
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!