Diluvium<span> was a term in </span>geology<span> for superficial deposits formed by </span>flood<span>-like operations of water, and so contrasted with </span>alluvium<span> or </span>alluvial<span> deposits formed by slow and steady </span>aqueous<span> agencies. The term was formerly given to the </span>boulder clay<span> deposits, supposed to have been caused by the </span>Noachian<span> deluge</span>
Answer:
A protoplanetary disk is round rotating object which is made of dense gas. This surrounds the newly formed star, Herbig star and T tauri star.
It is also considered as a accreation because the remnants like gases and other materials fall from them on to the star.The extremely illuminating protoplanetary disk are known as the proplyds.
Whereas the nebula can be defined as the densely packed hydrogen and other gases that collapse under the force of gravity. The Nebula starts becoming smaller and smaller because the particles of gases collapse and get closer to each other.
Upon force of gravity their friction and heat increases which slowly collapse the star.
Answer:
C. Electron, atom, molecule, cell
They combine to form low altitude ozone
Phospholipids have phosphate group heads that are hydrophilic while the fatty acid tails are hydrophobic.
They are able to form cell membrane as they automatically arrange themselves in the required pattern in water because of these properties.To form membranes, these line up next to each other with their heads on the outside of the cell and their tails on the inside. A second layer of phospholipids also forms with heads on the inside of the cell and tails facing away.
In this way a double layer is formed with phosphate group heads on the outside, and fatty acid tails on the inside. This double layer, called a lipid bi-layer, forms the main part of the cell membrane.
