Answer to Question 1
In order for limestone to develop into karst topography, it must contain 80 or more of calcium carbonate, it must have a complex patterns of joints and an aerated zone; and vegetation must be present. Common features of karst topography include sink holes (dolines), karst valleys; cockpits and cones; caves and caverns; and (within caves and caverns) the varied spleothems.
Answer to Question 2
Hydration involves little chemical change in the rock and doesn't form new chemical compounds. However, it does involve a change in the structure of the rock. Hydrolysis is the decomposition of a chemical compound by reaction with water. Hydrolysis chemically breaks down a mineral, thereby producing a different mineral through a chemical reaction.
Two types of DNA transfer can take place during conjugation
Formation of head in arthropod subphyla
Types of Neurons
Formation of an Impact Crater
Bone Formation
Gastrulation and the onset of organ formation.