The production of rice in the year 2001 was 1000 tones which was 25% of the total food grain production in that year. In the next year if the production of rice decreased by 4% and production of rice as a percentage of total food grain production increased by 5 percentage points, what is the total food grain production in 2002?

3200 tonnes

Explanation

Production of rice in 2001 =1000 tonnes

% rice to total production = 25%

Total production =100/25 *1000 = 4000 tonnes

2002 production of rice decrease by 4%

Decrease = 4% * 1000 = 40

Production of rice =960

% production of rice increase  by 5% = 25%+5%= 30%

Total food production 100/30*960 =3200 tonnes

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'

d) social security number

let me know if i am correct or not, so i can edit the answer.