Answer: A) Erosion Explanation: Caverns are openings in the ground. Some famous caverns in the United States are Mammoth Cave, Carlsbad Caverns, Wind Cave, and Luray Caverns.   When rainwater trickles down through the soil, it carries carbon dioxide from the air with it. This turns acidic as it moves through the soil, joining with carbon from decaying plants. This acidic rainwater then eats away at, or erodes, the rock under the ground, forming a cave or cavern. For this process to occur, the rock must be the right type; limestone, dolomite, and gypsum are common.

Answer: C) Vertebral column Explanation: The axial skeleton is the part of the skeleton that consists of the bones of the head and trunk of a vertebrate. In the human skeleton, it consists of 80 bones and is composed of six parts; the skull bones, the ossicles of the middle ear, the hyoid bone, the rib cage, sternum and the vertebral column.   Bones of shoulder, thigh and foot are the part of appendicular skeleton.     Hence, Vertebral column is the part of axial skeleton.

Answer: C) DNA Explanation: The most important polymer present in the nucleus is DNA- the master molecule. It is a polymer of Nucleotides.

Add the letter 'G' to the word 'ONE' and it become's 'Gone' which means disappear.

Answer: C) DNA information is copied to RNA Explanation: Transcription is the process of copying the genetic material or information that is the DNA to messenger RNA (mRNA.

Answer: D) France Explanation: France national football team has won the FIFA 2018 - an international football tournament contested by the men's national teams of the member associations of FIFA once every four years. It took place in Russia from 14 June to 15 July 2018.

Answer: C) Goa Explanation: Uniform civil code is the ongoing point of debate within Indian mandate to replace personal laws based on the scriptures and customs of each major religious community in India with a common set of rules governing every citizen.   Goa is the only state in INdia where Uniform Civil Code is applied. Laws are equal to all religion. Polygamy and triple talaq are illegal.

Answer: B) Sun Explanation: The water cycle is a term for the movement of water between the Earth's surface, the sky and underground. Water evaporates due to heat from the sun. Hence, the water cycle is driven primarily by the energy from the sun. This solar energy drives the cycle by evaporating water from the oceans, lakes, rivers, and even the soil. Other water moves from plants to the atmosphere through the process of transpiration.