Questions

A metalloid is an element with properties between metals and non metals or the mix of both.

The six metalloids are arsenic, silicon, germanium, boron, antimony and tellurium.

Hence, silicon is the only metalloid in the given list.

High level data models provide the concepts that are close to the way many users perceive data

The project initiator or sponsor should be at a level that is appropriate to funding the project. They will either create the project charter or delegate that duty to the project manager.

Projects are authorized by someone external to the project such as a sponsor, PMO or portfolio steering committee.

Lima is the capital of Peru

A barometer is a tool that measures air pressure

A rising barometer indicates increasing air pressure, a falling barometer indicates decreasing air pressure.

In space, there is a nearly complete vacuum, so the air pressure is zero.