Which biome on earth is the most resilient and which biome on earth is the least sustainable? and why?

earth is flat

Explanation:

Because little to nothing grows in ground that is frozen year-round except for some forms of microscopic life, the arctic biome has the least amount of diversity among all the major ecosystems of the Earth. Covered in ice, most of the region experiences deeply cold temperatures.

Explanation:

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.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.