Explanation Timbuktu is a city in Mali, situated 20 km (12 mi) north of the Niger River. The town is the capital of the Timbuktu Region, one of the eight administrative regions of Mali . Explanation Motorola was the  first  company to produce a handheld mobile phone. On  April 3, 1973 , Martin Cooper, a Motorola researcher and executive, made the first mobile telephone call from handheld subscriber equipment, placing a call to Dr. Joel S. Engel of Bell Labs, his rival. **** Explanation Hopman cup is a hard-court tennis tournament held every year between held every year in Australia. Explanation On June 26, 1954, at Obninsk, Russia , the nuclear power plant APS-1 with a net electrical output of 5 MW was connected to the power grid, the world’s first nuclear power plant that generated electricity for commercial use. Explanation Boron deficiency affects vegetative and reproductive growth of plants resulting in inhibition of cell expansion, death of meristem and reduced fertility. Plants contain B both in a water-soluble and insoluble form. Explanation Valletta is the capital of Malta. Berlin is the capital of Germany. London is the capital of England. Explanation ‘ International Day for Preventing the Exploitation of the Environment in War and Armed Conflict’ is observed every year on November 6 . The UN General Assembly declared the observance of this day, in the year 2001. As per the United Nations Environment Programme (UNEP), at least 40 percent of all internal conflicts are linked to the exploitation of natural resources. Explanation International  Day of Radiology is observed on  November 8. Theme  2020 : Radiologists and radiographers supporting patients during COVID-19. Explanation Explanation

Explanation Timbuktu is a city in Mali, situated 20 km (12 mi) north of the Niger River. The town is the capital of the Timbuktu Region, one of the eight administrative regions of Mali . Explanation Motorola was the  first  company to produce a handheld mobile phone. On  April 3, 1973 , Martin Cooper, a Motorola researcher and executive, made the first mobile telephone call from handheld subscriber equipment, placing a call to Dr. Joel S. Engel of Bell Labs, his rival. **** Explanation Hopman cup is a hard-court tennis tournament held every year between held every year in Australia. Explanation On June 26, 1954, at Obninsk, Russia , the nuclear power plant APS-1 with a net electrical output of 5 MW was connected to the power grid, the world’s first nuclear power plant that generated electricity for commercial use. Explanation Boron deficiency affects vegetative and reproductive growth of plants resulting in inhibition of cell expansion, death of meristem and reduced fertility. Plants contain B both in a water-soluble and insoluble form. Explanation Valletta is the capital of Malta. Berlin is the capital of Germany. London is the capital of England. Explanation ‘ International Day for Preventing the Exploitation of the Environment in War and Armed Conflict’ is observed every year on November 6 . The UN General Assembly declared the observance of this day, in the year 2001. As per the United Nations Environment Programme (UNEP), at least 40 percent of all internal conflicts are linked to the exploitation of natural resources. Explanation International  Day of Radiology is observed on  November 8. Theme  2020 : Radiologists and radiographers supporting patients during COVID-19. Explanation Explanation

Explanation Depolarization of membrane potential, and how does change in membrane potential trigger graded and action potentials for the transmission of signals Explanation Explanation Shark is a kind of fish  mostly fishes have s cales Explanation Sea cucumbers have no arms , no spines and no pedicellariae. Sea Lily: Sea lilies belong to the class Crinoidea of phylum Echinodermata. Explanation Water pollution  occurs when harmful substances often chemicals or microorganisms—contaminate a stream,  river , lake, ocean, aquifer, or other body of  water , Explanation A carnivore is an animal that gets food from killing and eating other animals. Carnivores generally eat herbivores, but can eat omnivores, and occasionally other carnivores Explanation Cell is devide by  the process by which a parent cell divides into two or more daughter cells Explanation Explanation A region is arid when it is characterized by a severe lack of available water, to the extent of hindering or preventing the growth and development of plant and animal life. Explanation he speed of early printers was measured in units of characters per minute (cpm) for character printers

Explanation Timbuktu is a city in Mali, situated 20 km (12 mi) north of the Niger River. The town is the capital of the Timbuktu Region, one of the eight administrative regions of Mali .

Explanation Depolarization of membrane potential, and how does change in membrane potential trigger graded and action potentials for the transmission of signals Explanation Explanation Shark is a kind of fish  mostly fishes have s cales Explanation Sea cucumbers have no arms , no spines and no pedicellariae. Sea Lily: Sea lilies belong to the class Crinoidea of phylum Echinodermata. Explanation Water pollution  occurs when harmful substances often chemicals or microorganisms—contaminate a stream,  river , lake, ocean, aquifer, or other body of  water , Explanation A carnivore is an animal that gets food from killing and eating other animals. Carnivores generally eat herbivores, but can eat omnivores, and occasionally other carnivores Explanation Cell is devide by  the process by which a parent cell divides into two or more daughter cells Explanation Explanation A region is arid when it is characterized by a severe lack of available water, to the extent of hindering or preventing the growth and development of plant and animal life. Explanation he speed of early printers was measured in units of characters per minute (cpm) for character printers

Explanation Depolarization of membrane potential, and how does change in membrane potential trigger graded and action potentials for the transmission of signals

Explanation

Explanation Shark is a kind of fish  mostly fishes have s cales

Explanation Sea cucumbers have no arms , no spines and no pedicellariae. Sea Lily: Sea lilies belong to the class Crinoidea of phylum Echinodermata.

Explanation Water pollution  occurs when harmful substances often chemicals or microorganisms—contaminate a stream,  river , lake, ocean, aquifer, or other body of  water ,