Which evidence did carl linnaeus use to classify organisms?
physical characteristics
evolutionary history
physical characteristics and evolutionary history
physical characteristics, genetics, and evolutionary history

Answer;

-Physical characteristics

Explanation;

-The evidence that Carl Linnaeus used to classify organisms was the physical characteristics.

-Linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. Among his contributions was the development of a hierarchical system of classification of nature. Additionally, he provided a consistent way to name species called binomial nomenclature.

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.