The radiation pattern and even the driving point impedance of an antenna can be influenced by the dielectric constant and especially conductivity of nearby objects. For a terrestrial antenna, the ground is usually one such object of importance. The antenna's height above the ground, as well as the electrical properties (permittivity and conductivity) of the ground, can then be important. Also, in the particular case of a monopole antenna, the ground (or an artificial ground plane) serves as the return connection for the antenna current thus having an additional effect, particularly on the impedance seen by the feed line.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Whats another name for the ground?
Ah, so.. artificial ground plane

As a result of continued warming, the polar ice caps melted and much of Gondwana became a desert. In Eastern Antarctica, seed ferns or pteridosperms became abundant and large amounts of sandstone and shale were laid down at this time. Synapsids, commonly known as "mammal-like reptiles", were common in Antarctica during the Early Triassic and included forms such as Lystrosaurus. The Antarctic Peninsula began to form during the Jurassic period (206–146 Ma), and islands gradually rose out of the ocean. Ginkgo trees, conifers, bennettites, horsetails, ferns and cycads were plentiful during this period. In West Antarctica, coniferous forests dominated through the entire Cretaceous period (146–66 Ma), though southern beech became more prominent towards the end of this period. Ammonites were common in the seas around Antarctica, and dinosaurs were also present, though only three Antarctic dinosaur genera (Cryolophosaurus and Glacialisaurus, from the Hanson Formation, and Antarctopelta) have been described to date. It was during this era that Gondwana began to break up.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What types of trees and plants appeared during the Triassic period?
Ah, so.. unanswerable

North Raleigh is an expansive, diverse, and fast-growing suburban area of the city that is home to established neighborhoods to the south along with many newly built subdivisions and along its northern fringes. The area generally falls North of Millbrook Road. It is primarily suburban with large shopping areas. Primary neighborhoods and subdivisions in North Raleigh include Harrington Grove, Springdale, Dominion Park, Bedford, Bent Tree, Brentwood, Brier Creek, Brookhaven, Black Horse Run, Coachman's Trail, Crossgate, Crosswinds, Falls River, Hidden Valley, Lake Park, North Haven, North Ridge, Oakcroft, Shannon Woods, Six Forks Station, Springdale, Stonebridge, Stone Creek, Stonehenge, Summerfield, Valley Estates, Wakefield, Weathersfield, Windsor Forest, and Wood Valley. The area is served by a number of primary transportation corridors including Glenwood Avenue U.S. Route 70, Interstate 540, Wake Forest Road, Millbrook Road, Lynn Road, Six Forks Road, Spring Forest Road, Creedmoor Road, Leesville Road, Strickland Road, and North Hills Drive.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What neighborhoods are in North Raleigh?
Ah, so..
Harrington Grove, Springdale, Dominion Park