What’s the tag used to declare the document type

During physical science class ben and jerry connected three identical lightbulbs in parallel to a battery where happens when ben removes one of the lightbulbs from it’s socket

Which factor is the most important when choosing a website host? whether customers will make secure transactions the number of email accounts provided the purpose of the website the quality of the host control panel

Explain how email technologies enable the exchange of messages between users. find out the typical parts of an email address and explain each part.