I think you need to re-phrase the question - I can't see what you are asking.
Cattle ears are pierced with tags and buttons for identification purposes, to identify a particular animal within a larger herd. This is highly useful of the herd is uniform, and when selling them. In Canada, the use of RFID tags and buttons is necessary for the ability of an animal to be traced back to its original herd should anything arise with that particular animal.
They both are mechanisms by which new species arise grad point
Recognizing the different organs is a difficulty that may arise during the dissecting of a fetal pig. Another difficulty would be the smell and actually cutting an animal may cause you to be ill.
Louis Pasteur
Speciation is the evolutionary process by which new biological species arise.
If one animal has a mutation and breeds with another animal then a new species may arise. The gene of the mutation may be carried down in the babies.
Mt a mother and father mosaic tetraploid animal having a special hug.
Will arise (for example, I will arise).
The anagram for arise is raise.
It depends if the animal is alive!Some would describe all art with animals as unethical, however it varies from person to person.If the animal is alive, but being well looked after and is under no stress, then I don't think it is unethical.If the animal is dead, questions may arise as to where the animal was acquired, how it was killed, its impact on its species etc.
Arise/arises/arising.
"arise" means to get up or to appear.
The sun began to arise.
The past tense for arise is arose.
when agency arise
A rider was sent to arise the militia.
The past tense for arise is arose.