Banana is a native of south Asia and it was brought to the Western Hemisphere during the 16th century. Banana plant is an oversized herb belonging to the lily family. Although there are several varieties of banana, the most important one entering the trade is Musa sapientum.
Ultrasound refers to a sound wave with a frequency greater than the upper limit of human hearing, which is generally over 20 kHz. In general, humans can hear sounds with a frequency between 20 Hz and 20 kHz.
Warm ocean currents raise the temperature in cold areas while the cold currents decrease the temperature in warm ocean areas.The Labrador current which is a cold current, lowers the temperature near the north-east coast of North America.
EXAMIANS