Which events are most likely if an index fossil is found in a layer at location 1, but the layer and index fossil are not found at location 2 nearby, which is known to be the same relative age? check all that apply. the layer never formed at location 2. the locations were too close together. the organism did not exist at location 2. the missing layer at location 2 may have eroded. the layers at location 2 formed much earlier than those at location 1.

The layer never formed at location 2.

The organism did not exist at location 2.

The missing layer at location 2 may have eroded.

The layer never formed at location 2.

The organism did not exist at location 2.

The missing layer at location 2 may have eroded

Explanation:

it will increase due to the time span

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.