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The most widespread ground covers are grasses of various types. In ecology, groundcover is a difficult subject to address because it is known by several different names and is classified in several different ways. The term "groundcover" could also be referring to "the herbaceous layer", "regenerative layer", "ground flora" or even "step over".
Types of sensors on these satellites include passive and active remote sensors. Sensors on Earth observation satellites often take measurements of emitted energy over some portion of the electromagnetic spectrum (e.g., UV, visible, infrared, microwave, or radio). [1]
Land cover is the physical material at the land surface of Earth. Land covers include flora, concrete, built structures, bare ground, and temporary water. Earth cover is the expression used by ecologist Frederick Edward Clements that has its closest modern equivalent being vegetation. [ 1]: 52 The expression continues to be used by the United ...
Hens and Chicks. If you're looking for low-maintenance ground covers, succulents like hens and chicks (Sempervivum spp.) are a great option.These drought-tolerant plants make the perfect addition ...
A satellite or artificial satellite[ a] is an object, typically a spacecraft, placed into orbit around a celestial body. Satellites have a variety of uses, including communication relay, weather forecasting, navigation ( GPS ), broadcasting, scientific research, and Earth observation. Additional military uses are reconnaissance, early warning ...
The name comes from the Molniya satellites, a series of Soviet / Russian civilian and military communications satellites which have used this type of orbit since the mid-1960s. A variation on the Molniya orbit is the so-called Three Apogee (TAP) orbit, whose period is a third of a sidereal day. The Molniya orbit has a long dwell time over the ...
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