Forum Forums Class 9 Science Sound Dolphins, bats and ... Notifications Clear all Dolphins, bats and porpoise uses (a) ultrasound (b) infrasound (c) both (a) and (b) (d) none of these Sound Last Post by Arsh01 5 years ago 1 Posts 2 Users 0 Likes 380 Views 0 09/01/2021 2:59 pm Topic starter Trisha Dave (@trisha-dave) Illustrious Member 2028 Posts 2028 0 0 Dolphins, bats and porpoise uses (a) ultrasound (b) infrasound (c) both (a) and (b) (d) none of these AnswerAdd a comment Topic Tags class 9 cbse ncert sound 1 Answer Most Voted Oldest Newest 0 09/01/2021 3:00 pm Arsh01 (@arsh01) Noble Member 2028 Posts 0 2028 0 (a) ultrasound Add a comment Share: Super Globals Requests: Server: Options and Features route: community use_home_url: url: https://eanshub.com/community/ pageid:187 default_groupid: 3 2022 How Can We Help? Δ Home About Us Contact Us Privacy Policy Term of Use Copyright © 2020 Eanshub All Rights Reserved
