ACID properties of database transaction –

• Atomicity- Atomicity ensures either all-or-none operations of a transaction are carried out.

• Consistency-This property ensures that database remains in a consistent state before the start of transaction and after the transaction is over.

• Isolation-Isolation ensures that executing transaction execution in isolation i.e. is unaware of other transactions executing concurrently in the system.

• Durability-This property ensures that after the successful completion of a transaction i. e when a transaction COMMITs, the changes made by it to the database persist i.e. remain in the database irrespective of other failures.

Unsaturated compounds decolourisebromine. Benzene has no double bonds, however benzene has a ring of delocalised electrons for that reasonbenzene is less reactive.

Management is both an Art and a Science.
(i) Management is an art as well as a science though an inexact science.
(ii) Art is the skillful and personal application of existing knowledge to achieve desired results. Management is an art because like any other art, it is a systematized body of knowledge and personalised application based on continuous practice.
(iii) Science is a systematised body of knowledge that explains certain general truths.
Like science, management principles are derived through observation and repeated experiments.
Since management deals with human beings the outcome of these experiments cannot be accurately predicted.
Moreover they have to be modified according to the given situation. Hence, it is an inexact science.

Disease: It is a condition in which one or more organs or systems of the body are adversely affected. Disease is characterized by various signs and symptoms.

Infectious Disease: A disease which can be easily transmitted from one person to another is called infectious disease.

Non-infectious Disease: A disease which cannot be transmitted from one person to another is called non-infectious disease.

• Spore formation is a method of asexual reproduction.
• Plants like ferns, moss, fungi reproduce by this method.
• Spores are unicellular reproductive bodies present in sac called sporangia.
• When spores mature sporangia burst and spores are carried to different location by air, wind, water.
• When spores fall on a suitable ground, they germinate and develop new individuals.

Distillation is the simple process of heating a liquid to form vapours and then cooling the vapours to get back the liquid. It is done to produce certain alcoholic drinks to increase their alcoholic content. The type of alcohol in the alcoholic drinks we drink is a chemical called ethanol.To make alcohol, you need to put grains, fruits or vegetables through a process called fermentation (when yeast or bacteria react with the sugars in food - the by-products are ethanol and carbon dioxide).

Determinism :-
1. It refers to the point of view supporting environment control on human action.
2. The determinism generally emphasis on human as a passive agent influenced by the factors determine their attitude, decision-making and life style.
3. The scholars who supported deter - minism were Greek and Roman scholar.

Possibilism :-
1. It refer to the physical environment for humans to exploit it for benefits.
2. The emphasis is firmly placed on human rather than nature.
3. Lucian Febvre and Vidal de la Blache advocated and developed system-atically the school of possibilism.

A greenhouse stays warm inside, even during the winter. In the daytime, sunlight shines into the greenhouse and warms the plants and air inside. At nighttime, it's colder outside, but the greenhouse stays pretty warm inside. That's because the glass walls of the greenhouse trap the Sun's heat.

The industrial wastes includes organic matter, inorganics (sodium, potassium, calcium, magnesium, copper, lead, nickel, and zinc), pathogens, and nutrients (most notably nitrogen and phosphorus). The treated wastewater can then be safely discharged into water bodies, applied to land, or even reused in plant operations.