Answer:
A. Obsidian
Explanation:
It fits the property described in the question.
It cools so fast that no visible crystal or grain could form. It has high silica Composition, black and glassy. It is also used to make tools with sharp edges
Answer:
correct answer is option C
Explanation:
Option a cannot be correct since when three is technological stability in the industry environmental uncertainty will remain constant.
Option b cannot be correct since when industry the industry is at an equilibrium state than environmental uncertainty will not be affected.
Option c is correct since environmental complexity affect the environmental uncertainty when environmental complexity is high than environmental uncertainty will be high and when environmental complexity is low than environmental uncertainty will be low.
option d cannot be correct since environmental uncertainty is most likely to be high when environmental change is extensive.
Answer:
The moon's surface has been pelted by asteroids, comets and meteorites which have caused craters.
Explanation:
Answer:
Salinity means the degree of dissolved salt content in water
Explanation:
In a world without global warming, water in seas or in oceans is salty or saline due to the influx or of rivers and various other sources that bring the water and other geomaterial from the landscapes like soils and various other clays and mud deposits. On an average the sea water consists of about 35 (ppt) part per thousand. mostly of Na and CL ions. More saline the water is more will be its density and less saline water is less is its density thus, freshwater has least density, as compared to the red sea and other sea with more than 37 ppt density. Rainfall is also an important factor in reducing the amount of saltiness.
