<span>Rifting and crustal thinning are characteristic of a Rift plate boundary.</span>
Answer:

Explanation:
Given data:
exhaust velocity = 2.455 km/s
specific impulse = 294 second


Ve = effective exhaust velocity

Isp specific impulse
g_o = standard gravity

from above equation we have
[ 2.455 km/s = 2455 m/s]

Answer:
D. Earthquakes cause rocks to move and open up new areas for nesting.
Hello
<span>1.Since the Middle East is home to such large amounts of oil, the region enjoys much financial and economic security. - True
2.</span><span>Cultural diffusion is the spread of ideas from one culture to another. - True
</span>
3.
<span>The distribution of wealth throughout the world is sharply disparate due to increasing population pressures on areas such as the Middle East and India. - False
</span>
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Answer:
B. both water and calcite contain oxygen.
Explanation:
water molecules are not equal some are substituted with a heavier counterpart,the standard Oxygen molecule can be substituted by the 18O and hydrogen by H2 given rise to H216O,HD16O and H118O they are termed isotopologues and gave different physical properties.First, over the ocean, the heavier isotopes are less likely to take part in the formation of moisture, leading to lower concentrations of the heavy isotopes in the clouds compared to the mean oceanic water isotopic composition (lower concentration means that the δ18O is more negative). Then, as the air masses move toward the poles, temperature decreases leading to precipitation (either liquid or solid). The heavier isotopes will be preferentially found in the condensed phase than the light ones, which depletes even more the cloud from its heavy isotopes. Finally, in remote areas of the Polar Regions, the isotopic content of the final precipitation results from successive precipitation events. Since, as we saw, the precipitation contents in each isotope are different, each successive precipitation event will have a different isotopic composition, with the final one having the least heavy isotopes – a process called distillation. At each step of the moisture’s path from ocean to cloud to precipitation, the isotopic fractionation is strongly influenced by temperature. This leads to a temperature signal in the isotopic composition of both vapour and precipitation