Volcanoes can be two broad types: stratovolcano and a shield volcano namely.
In volcanology, viscosity plays a crucial role. High viscous (extremely sticky) magma eruptions typically result in steep-sided volcanoes with 30-35° slopes. This is due to the fact that the viscous volcanic material doesn't flow very far once it is erupted; instead, it accumulates in layers to form a cone-shaped volcano called a stratovolcano. In contrast, shield volcanoes have mild slopes of less than 10° and produce more basalt fluid lavas during eruption. A shield volcano's eruption can cause the basalt to flow far from the vent, creating broad, gentle slopes.
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The appropriate answer is a. A low-pressure system. Low-pressure systems are associated with cloud cover, thunderstorms and relatively high winds. The lower the pressure in the system the higher the wind speed. Examples of low-pressure systems include hurricanes, tropical storms, depressions and cold fronts. High-pressure systems such as anti-cyclones bring fair weather with relatively calm conditions.
Answer:
the fourth one
Explanation:
its the most reasonable one, without the predators hunting the number of preys would overpopulate, sorry if im too late
Basically, 2 grams of element X are needed to combine with 4 grams of element Y is order to produce the desired compound.
This means that the ratio between X and Y is 1:2.
Based on this, the amount of Y needed to combine with 42 grams of X is as follows:
amount of Y = 42 x (2/1) = 84 grams
