Answer:
Option A, habits . . . environment
Explanation:
Good sleep hygiene include all the measures taken to enhance the quality and environment of a bedroom and to ensure a peaceful and calm sleep. Thus, in this way the environment of the bed room is enhanced along with assurance that good sleep habits are followed.
Sleep hygiene can help one to work on certain sleep habits such as –
a) Maintain consistency to go to bed
b) Do exercise
c) Peaceful and cherishing environment of bedroom.
Therefore, option B is correct
1 and 3 i think 3 is nerve system
the role of organik material is idont know
Answer:
Histone proteins act to package DNA, which wraps around the eight histones, into chromosomes. Histone modifications act in diverse biological processes such as transcriptional activation/inactivation, chromosome packaging, and DNA damage/repair.
Living things are made of types of molecules, known as macromolecules.
There are four major classes of biological macromolecules:
carbohydrates
lipids
proteins
nucleic acids
Each of these types of macromolecules performs a wide array of important functions within the cell; a cell cannot perform its role within the body without many different types of these crucial molecules. In combination, these biological macromolecules make up the majority of a cell’s dry mass. (Water molecules make up the majority of a cell’s total mass.) All the molecules both inside and outside of cells are situated in a water-based (i.e., aqueous) environment, and all the reactions of biological systems are occurring in that same environment.
