Answer:It can come from unstable atoms that undergo radioactive decay, or it ... Ionizing radiation can affect the atoms in living things, so it poses a health risk by ... Ionizing radiation comes from x-ray machines, cosmic particles from ... However, as with alpha-emitters, beta-emitters are most hazardous
Explanation:
Deoxyribonucleic Acid, or DNA is in the shape of a double helix
Answer:
They are clastic sedimentary rocks
Explanation:
Sandstones, siltstones and shales are all clastic sedimentary rocks.
Clasitc sedimentary rocks are derived from other rock types.
These rock types typically forms from the suspended and bed load of erosion. The weathering of rocks provides the materials that forms these rock types.
The difference between the three rock types is based on their size. Shales are the finest while sandstones are made up of sandsized particles. Siltstones are in the middle.
The Southern Oscillation is in a negative phase when pressures are higher in Darwin than in Tahiti.
The Southern Oscillation Index (SOI) is a standardized index that is derived from the observed changes in sea level pressure (SLP) between Tahiti and Darwin, Australia. This index is used to predict future weather patterns. During El Nio and La Nia events, the SOI is one measurement of the large-scale fluctuations in air pressure that occur between the eastern and western tropical Pacific. These changes can be attributed to the Southern Oscillation. In general, when time series of the SOI are smoothed, a very good correlation with variations is seen in the temperatures of the oceans throughout the eastern tropical Pacific. The negative phase of the SOI indicates that the air pressure in Tahiti is lower than normal while the air pressure in Darwin is higher than normal. Extended periods of negative Southern oscillation index values coincide with ocean temperatures over the eastern tropical Pacific that are abnormally warm (cold), which is typical of El Nio (La Nia) events.
Learn more about El Nino here :
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