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কোথাকার পানিকে Marine water বলা হয়?

সঠিক উত্তর:

In the following question the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into fourparts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations iscorrect. 1. Marine biology is the study of organisms in the ocean.
P. At a fundamental level, marine life helps determine the very nature of our planet.
Q. Marine life is a vast resource.
R. Shorelines are also shaped and protected by marine life.
S. Marine organisms contribute significantly to the oxygen cycle.
6. Marine biology covers a great deal, from the microscopic to the huge whales.

“মহাকর্ষীয় জল' বলা হয় কোন পানিকে? .

What is the primary source of energy for most marine organisms involved in marine biotechnology?

A marine officer asks you to design a turbine for marine propulsion. Which of the below would be your best choice?

The Marine Corps philosophy of leadership is based upon developing individual Marine.

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.
Crude mineral oil comes out of the earth as a thick brown or black liquid with a strong smell. It is a complex mixture of many different substances, each with its own individual qualities. Most of them are combinations of hydrogen and carbon in varying proportions. Such hydrocarbons are also found in other forms such as bitumen, asphalt and natural gas. Mineral oil originates from the carcasses of tiny animals and from plants that live in the sea. Over million of years, these dead creatures form large deposits under sea­bed and ocean currents cover them with a blanket of sand and silt. As this material hardens, it becomes sedimentary rock and effectively shuts out the oxygen, thus preventing the complete decomposition of the marine deposits underneath. The layers of sedimentary rocks become thicker, and heavier. Their pressure produces heat, which transforms the tiny carcasses into crude oil in a process that is still going on today.
The time taken for the marine deposits to harden into rocks is

Due to algal growth in a water supply reservoir in a neighborhood, the water has acquired an unpleasant taste. The compound is non-degradable, and the water utility has decided that the best way to deal with the situation is simply to flush the contaminant out of the system. The reservoir contains 11,000 m3 of water, and the proposal is to pump 300 m3/h of clean water through the system and discharge the effluent to the sewer system until 95% of the offending compound has been removed. If the reservoir is intensely mixed, how much flushing water will be required?

ধরা যাক, যদি A+B বলতে বোঝায় A হয় B এর পিতা, A-B বলতে বোঝায়A হয় B এর স্ত্রী, Ax B বলতে বোঝায় A হয় B এর ভাই, A + B বলতে বোঝায় হয় A হয় B এর বোন তাহলে উপরের আকার অনুসারে P - Rx Q এই প্রকাশটি বলতে কী বোঝাবে?

মাটি -কণার ফাঁকে -ফাঁকে সঞ্চিত পানিকে বলা হয় -

মাটি -কণার চারদিকে ফিল্মের ন্যায় পাতলা আবরণ হিসেবে সংলগ্ন থাকা পানিকে বলা হয়-