What type of bonds joins amino acids together

Which of these statements are true about scientific theories and hypothesis

What is the number of phosphates in an atp molecule

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism