Indoor air pollution has increased as improvements have been made in . A)
heating and air-conditioning systems
B)
radon-resistant construction techniques
C)
energy conservation in the home
D)
green building construction
E)
all of these choices contribute to indoor air pollution

due to the fact that it skipped a generation we can tell it is definitely not a dominant trait, therefore it must be recessive. i think this is right let me know!

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.

answer by yourhope:

answer is

human impact on the environment can be seen in the deterioration of the !

: )