The list of other possible causes for a drop in a personâs white blood cell count is long. Autoimmune disorders, congenital disorders that affect the way bone marrow works, disorders of the spleen, certain infectious diseases, cancer and parasitic diseases, among others, can all lead to low white blood cell counts.
Best Answer: Mountains can form at all three types of plate boundaries, convergent, divergent, and transform. At divergent boundaries new crust is being formed. The mid-Atlantic ridge is part of the longest mountain range on the planet, it just happens to be mostly covered by ocean.
The lines where they meet are called plate boundaries. There are three main types of plate boundary: divergent, convergent and transform. Plates move away from one another at divergent boundaries. This happens at mid-ocean ridges.Plates move towards one another at convergent boundaries; one plate is forced below another in a process called subduction.Earthquakes and composite volcanoes are common at this type of boundary. Plates move past on another at transform boundaries.The most famous example of this type of boundary is the San Andreas Fault in California. Image: Cutaway artwork showing different types of plate boundary and hotspots.he lines where they meet are called plate boundaries. There are three main types of plate boundary: divergent, convergent and transform. Plates move away from one another at divergent boundaries. This happens at mid-ocean ridges.