What are the two main things that determine what kind of methods a scientist can use?

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

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f