Question

summary of all functional groups
class 10

Answer 1

Functional groups are structural units that determines the chemical reactivity of molecule under a given set of conditions.Organic compounds are classified into several major categories based on the functional groups they contain.In the systematic names of organic compounds,numbers indicates the position of functional groups in basic hydrocarbon framework.Many organic compounds also have names which use the prefix form-for a compound that contains no carbons other than those in the functional group and acet-for those that have an additional carbon atom.

Answer 2

Answer:

Earth is like a patient whose health is declining and it is our duty to improve it. In 1987, the term Sustainable Development was used by the World Commission on Environment and Development. A zoo in Lukasa, Zambia has a cage in which a sign reads ‘The World’s most dangerous animal’ and inside there is a mirror. It gives a message that human beings are the most dangerous animals. Brandt Commission raised a question “Are we to leave our successors a scorched planet of advancing deserts, impoverished landscapes and ailing environment?”

There are four principal biological systems that form the foundation of the global economic system - fisheries, grasslands, forests, and croplands. These four systems also provide food and raw materials for industries except for minerals and synthetics. With these systems becoming unsustainable, fisheries will collapse, the forest will slowly disappear, grasslands will turn into a barren wasteland and croplands will become worse.

In poor countries, forests are being cut down for fuelwood which is used for cooking purposes. There are some areas where the cost of fuelwood is more than the cost of food. It is leading to deforestation at an alarming rate.

One of the reasons for the exploitation of the environment is the increasing population. It is observed that about one million population is increasing in every four days. This is not a good sign. There is an urgent need to control overpopulation in the world. Development is the best contraceptive for this problem as it will help in reduction in fertility, increase in education and income and improvement in health.

Explanation: