Which of the following is not an example of predation?
a. a blue whale feeding on zooplankton
b. a tree obtaining nutrients from the soil
c. a caterpillar eating the leaves of a treed. a wolf eating a deer

B. A tree obtaining nutrients from the soil

Explanation:

on edge 2020

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

answer: all : )

explanation: