You're on K12 haha :0
I think it's the second answer choice but not sure. Sorry if I'm wrong
traduce esto artículo
http://www1.lsbu.ac.uk/water/cellulose.html
Answer:
immune system
Explanation:
The adaptive immune system reacts specifically to pathogens (germs). It is able to recognize attacking pathogens and fights against certain antigens or foreign substances. The next time a known antigen is encountered, the adaptive immune system can respond faster.
There would be more prey than predators, as for a predator to have a balanced diet it should have a plentiful supply of food, meaning it needs more prey. You're welcome!