Answer:
B) Identifying the minerals within it
Explanation:
Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date the age of rock layers.
Modifier -51 is used to identify multiple lesion treatment. Modifier 51 multiple procedure indicates that several procedures were performed by the same health provider at the same session. The most expensive procedure should be listed first without the modifier. The subsequent ones should then be listed with the modifier attached.
Answer:
Dams can be damaged and may require repair
Explanation:
This is imperative to provide needed supports and maintenance for the aging dams,with capacity of up to 11,000. This dams were created as far back as 1948.Therefore the programme was geared towards effective re-habitation for maximum efficiency.
This repair programmes was termed Dam Rehabilitation Programme.And the secretary of Agriculture was given the authority to ensure effective execution of the programme.
In the state of Virginia,a total of 150 dams were part of the government landscape through the rehabilitation programme, and 11 of these have been well studied. .Todd Lake,Robinson Hallow, Lake Barton are some of these examples.
<u>Coquina</u> is the sedimentary rock is made up of pieces of shells.
Two types of sedimentary rock: Clastic and chemical sedimentary rocks
Explanation:
Coquina is the sedimentary rock formed by fragments or pieces of shells of marine animals like mollusks, brachiopods, trilobites and certain invertebrates.
The shells of marine animals are fragmented due to abrasion and mechanical degradation and sorting by the wave action and chemicals present in the sea water and gets transported which then sediments to form rock structures called coquina. The shells mostly contain calcium carbonate.
Chalk is the sedimentary rock formed b the fossil shells fragmented from foraminifers. This is a more powdery type of limestone.
Depending upon the type of sedimentation, sedimentary rocks are of three types:
Clastic – Made from sedimentation of clastic (pieces from broken rocks) through the processes of mechanical weathering and lithification (cementing and compacting). sandstone, conglomerate
Chemical – Made from evaporation of water and precipitation of materials which were previously dissolved in a solution. Example: Rock salt, dolomite
Organic – Repeated accumulation and sedimentation of organic matter or remains from plant and animal sources like bones (calcium deposits). Example: coal.
