Tricuspid valve: located between upper and lower chambers.
Pulmonary valve: Found in arteries leaving heart.
Email is the electronic mail that can send and receive messages through the net. An icon used for the file attachment in the mail is a paper clip.
<h3>What is the paperclip icon in the mail?</h3>
Icons are the symbols used for the representation of the activities in the message bar of the email. In the mail, a paperclip is used to represent the attachment for the files.
The Attachment icon allows linking the files from the system in the mail to send. The files can be docx, pdf, png, jpg etc.
Therefore, the option A. paperclip icon is used to indicate an attachment in mails.
Learn more about the paperclip icon and email here:
brainly.com/question/17854423
Weaker, less evolved living organisms die in relation to survival skills, but the better ones stay.
For artificial selection, people select organisms based on what advantages they have to make them better.
