[1957 saurav kumar]

First of all you have to know that the spices of fish for whom you are talking about Have already evolved in those conditions. From your point of view it’s hard to breathe for them in extreme Pressure. But for them it’s normal.

And generally fish have to pass water through their gill to get oxygen. Also in the deep sea. Where..low temperature , high Pressure , low nutrients and low dissolved oxygen content . They do the same. Because they are adapt themselves that helps them to breathe.. like heart adapt in such a way that it can produce higher stoke volume etc.

In most area under the deep sea doesn’t have low oxygen levels so fish can breathe as same as they do in pond and rivers.

And in the deep sea their is no limit of food. So in order to save energy many fishes in the deep sea have low metabolism ( means they need less oxygen than the fish in different environments) . Due to the availability of food . They move little, instead wait for food to fall from the more nutrient-rich layers above them. This way, they can use less oxygen for energy production.

[1957 saurav kumar]

As we know that India is a very vast country. Two-thirds of India’s population is engaged in agricultural activities. It is a primary activity, which produces food grains and raw materials for industries. India is geographically a vast country so it has various food and non-food crops which are cultivated in three main cropping seasons which are rabi, kharif and zaid.

Some Major crops are:-

Rice, Wheat, Millets, Maize and Pulses.

● Rice:-

•Temperature: Between 22-32°C with high humidity.

• Rainfall: Around 150-300 cm.

• Soil Type: Deep clayey and loamy soil.

• Top Rice Producing States: West Bengal > Punjab > Uttar Pradesh > Andhra Pradesh > Bihar.
◇ India is the second largest producer of rice in the world after China.

● wheat :-

• Temperature: Between 10-15°C (Sowing time) and 21-26°C (Ripening & Harvesting) with bright sunlight.

• Rainfall: Around 75-100 cm.

• Soil Type: Well-drained fertile loamy and clayey loamy (Ganga-Satluj plains and black soil region of the Deccan)

▪︎ Top Wheat Producing States: Uttar Pradesh > Punjab > Madhya Pradesh > Haryana > Rajasthan.

◇India is the second largest producer after China

● Millets: –

• Temperature: Between 27-32°C

• Rainfall: Around 50-100 cm.

• Soil Type: Can be grown in inferior alluvial or loamy soil because they are less sensitive to soil deficiencies.

• Jowar- Rain-fed crop grown in the moist areas with less or no irrigation.

• Bajra- Sandy soils and shallow black soil.

• Ragi- Red, black, sandy, loamy and shallow black soils. (dry regions)

• Top Millets Producing States: Rajasthan > Karnataka > Maharashtra > Madhya Pradesh > Uttar Pradesh

● Maize:-

• Temperature: Between 21-27°C

• Rainfall: High rainfall.

• Soil Type: Old alluvial soil.

• Top Maize Producing States: Karnataka > Maharashtra > Madhya Pradesh > Tamil Nadu > Telangana

◇ India is the seventh largest producer worldwide.

● pulses :-

• Temperature: Between 20-27°C

• Rainfall: Around 25-60 cm.

• Soil Type: Sandy-loamy soil.

• Top Pulses Producing States: Madhya Pradesh > Rajasthan > Maharashtra > Uttar Pradesh > Karnataka.

• India is the largest producer as well as the consumer of pulses in the world.