I apologize in advance if this is incorrect but what I was taught is that the correct answer is gather data to design a recovery plan.
Only to use nitrates when heart pain is active and progressing. Afterwards, see your heart specilist..
Answer: because its a chemical
Explanation: i dont know for sure but here is my theroy the animls eat it and it goes through out the ecosystem i dont want to get into to much detail but it can spread bc its a chemical it has a atomic number of 6
The lining is the e<span>ndometrium </span>