Answer:
The crop failures were caused by late blight, a disease that destroys both the leaves and the edible roots, or tubers, of the potato plant. The causative agent of late blight is the water mold Phytophthora infestans. The Irish famine was the worst to occur in Europe in the 19th century.
<span>Since a P-wave can travel anywhere between 1.5 and 8 kilometers per second, then it is all a matter of multiply those numbers by how many seconds there are in total in 9 minutes and 20 seconds. If that is the case, then a P-wave will travel at least 840 kilometers in the said time frame.</span>
Answer:
The spectral types and sub-classes represent a temperature sequence, from hotter (O stars) to cooler (M stars), and from hotter (subclass 0) to cooler (subclass 9). The temperature defines the star's "color" and surface brightness. ... Stars are also classified by luminosity class.
Explanation:
Answer:
C. Airborne ash and rocks from a volcanic eruption remain suspended in the air for a long time before eventually settling to the ground in a new location far from the volcano.
Explanation:
Tephra deposits take many forms and shape, and their composition doesn't really matter either. The only thing that defines a tephra really is that it was ejected from the mouth of a volcano and fell on the ground where it remained intact (not merged with something else).
So, forms of tephra could be big boulders landing on the volcano's side or ashes that travel around the globe to land on the other side of the planet.
Explanation:
Verkhoyansk Mountains, also spelled Verkhoiansk or Verchojansk, Russian Verkhoyansky Khrebet, mountains of Sakha (Yakutiya), far northeastern Russia, extending for 700 miles (1,100 km)—in a huge arc parallel to and east of the lower Lena River—to the Laptev Sea.
