Now, researchers have found the first evidence of changes taking place over the past 20 years in the shape of the inner core. Signs of the core’s deformation appeared in waves from earthquakes ...

Molecular evolution is the area of evolutionary biology that studies evolutionary change at the level of the DNA sequence. It includes the study of rates of sequence change, relative importance of ...

Molecular Biology is the field of biology that studies the composition, structure and interactions of cellular molecules such as nucleic acids and proteins that carry out the biological ...

They have two dimensions – length and width. A polygon is a closed 2D shape with straight sides that meet at vertices. Polygons can be regular or irregular. If all the straight sides of a shape ...