_____________ is the number of individuals of the same species that have come into the habitat from elsewhere during the time period under consideration.
The collection of all possible combinations of the goods and services that can be produced from a given amount of resources and a given stock of technological knowledge is called the ____________ of the economy.
The bar graph shows revenues in rupees lakhs from selling four different products (A, B, C, D) by a certain company. Study graph and answer the following question.
Revenues from which product were the least in both the years 2015 and 2016?
If the length of a chord of a circle is equal to that of the radius of the circle, then the angle subtended, in radians, at the centre of the circle by chord is