Blood flows from the peritubular capillary to the renal vein through this sequence of vessels. What vessel is this?

Fossils can only be formed when? if mud, silt or tar is in the area to preserve the fossil ierosion does not occur and allows the fossil to form oxygen and microorganisms cannot decay the bones the area is dry and does not contain mud or silt

According to the cladogram, which organisms have roundworms as a common ancestor?

The response is the basis for vaccination. primary secondary tertiary none of the above