Although bats use echolocation to detect their prey, and find their way around in the dark, the sounds which they emit are 'ultrasonic', which is another way of saying they are beyond the range of normal human hearing. Ultrasound is a cyclic sound pressure wave with a frequency greater than the upper limit of the human hearing range. Ultrasound is thus not separated from "normal" (audible) sound based on differences in physical properties, only the fact that humans cannot hear it.
Who is the current minister of Agriculture and Farmers’ Welfare Ministry?
Which of the following given options, the cellular and molecular control of programmed cell death called?
Which one of the following is not a measure of 'Income-inequality':
Common bread wheat (2n = 42) is
In tile drainage, when the tiles arranged from one side only it is known as
Most abundant part of a plant cell wall is
If pH of the soil is 8, EC is > 4 mmhos/cm and ESP is 12% then soil is said to be
What is a common method for determining soil moisture content?
‘Allahabad Safeda’ is the variety of :
Photoinhibition is associated with
