Short notes Fst

(a) Social Forestry
Ans: Social forestry is the forestry by the people and for the people, whose main purpose is to fulfill the needs of forestry which are - manure, food, fruit, fibre and productive capacity. As a whole social forestry's main objective is to reconstruct the ecosystem and conserve the environment. The main objective of it is to cooperate soil conservation and to prevent spoiling the productive capacity of soil.
(b) Agricultural biotechnology
Ans: Agricultural biotechnology is an area of agricultural science involving the use of scientific tools and techniques, including genetic engineering, molecular markers, molecular diagnostics, vaccines, and tissue culture, to modify living organisms: plants, animals, and microorganisms. Use of biotechnology is very much popular in our country but is harmful for health.
(c) Chemical evolution
Ans: Chemical evolution describes chemical changes on the primitive Earth that gave rise to the first forms of life. The first living things on Earth were prokaryotes with a type of cell similar to present-day bacteria. Prokaryote fossils have been found in 3.4-million-year-old rock in the southern part of Africa, and in even older rocks in Australia, including some that appear to be photosynthetic. All forms of life are theorized to have evolved from the original prokaryotes, probably 3.5-4.0 billion years ago.
(d) Scientific method
Ans: The Scientific Method is a logical and rational order of steps by which scientists come to conclusions about the world around them. The Scientific Method helps to organize thoughts and procedures so that scientists can be confident in the answers they find. Scientists use observations, hypotheses, and deductions to make these conclusions, just like you will use the Scientific Method in your science fair project.
(e) Mathematics in ancient India

Ans: Indian mathematics emerged in the Indian subcontinent from 1200 BC until the end of the 18th century. In the classical period of Indian mathematics (400 AD to 1200 AD), important contributions were made by scholars like Aryabhata, Brahmagupta, and Bhaskara II. The decimal number system in use today was first recorded in Indian mathematics. Indian mathematicians made early contributions to the study of the concept of zero as a number, negative numbers, arithmetic, and algebra. In addition, trigonometry was further advanced in India, and, in particular, the modern definitions of sine and cosine were developed there. These mathematical concepts were transmitted to the Middle East, China, and Europe and led to further developments that now form the foundations of many areas of mathematics.