The X can possibly be the sex chromosome. Like for human female we have the XX chromosomes and when the allele is on the X chromosome we write as X with a R as the superscript on top right.
A lack of blood flow determines the number of cell layers that can
survive when they are transplanted
Mosses and ferns are seedless plants. They reproduce via the use of spores. The correct answer is C.
Answer:
Option B, Divergent Boundary
Explanation:
The tectonic plates moving around form the divergent boundary and at this boundary magma from inside the earth rises to form new crust on the lithosphere beneath the water. Most of the divergent plate boundaries are present below the water where they form oceanic spreading ridges (submarine mountain ranges). The process of formation of oceanic spreading ridges is volcanic.
Hence, option B is correct
