Distinguish between the following pairs
Infrasounds and ultrasound
String and percussion instruments
Endangered and extinct species
Plant cell and animal cell
Answers
Answer:
Infrasound is sound that is below the lower limit of human hearing, below 20 Hz, and ultrasound is above the upper limit of human hearing, above 20,000 Hz.
A string instrument has typically strings and we have to strum, pluck or bow to produce vibrations. Eg-guitar, violin etc.. The percussion family is defined as one part of the instrument being hit together, or with a mallet or stick to create sound. Eg-xylophone piano, cymbals etc
Extinction means that the existence of a particular species is completely wiped out from the planet. It is an irreversible form of damage, since neither a single male and female species member is present to procreate. Endangered, on the other hand, means that a species is nearing extinction
Cells are the basic unit of a living organism and where all life processes are carried out. Animal cells and plant cells share the common components of a nucleus, cytoplasm, mitochondria and a cell membrane. Plant cells have three extra components, a vacuole, chloroplast and a cell wall.