Question

what is echo system And ultrasonic sound ?

Answer 1

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
♻♻Here Is Your, Answer!♻♻
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

✴Ecosystem=> The plants and animals that live in a particular area together with the complex relationship that exists between them and their environment.

✴Ultrasonic Sound=> A frequency above the human ear's audibility limit of about 20000 hertz.

Answer 2

$\huge \sf \blue{\colorbox{pink}{Answer}}$

Ecosystem= The plants and animals that live in a particular area together with the complex relationship that exists between them and their environment.

Ultrasonic Sound= A frequency above the human ear's audibility limit of about 20000 hertz.