Composting creates new soil, removes vegetable matter from the waste stream and provides a thriving ecosystem. what animals benefit from the ecosystem created from composting?

The plants benefit this system, so if the plants benefit so does the herbivores, and if the herbivores benefit then the carnivores, fit, so pretty much anything above the plants in a food chain.

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.

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project