A student wants to test the effect of fertilizer on plant growth. In her experiment, 5 plants receive no additional filter, 5 receive 25g of extra fertilizer, and another 5 plants receive 50g of extra fertilizer. After 8 weeks the plants heights are measured. Independent Variable?
Dependent variable?
Experimental group?
Control group? Please answer

answer

crater lake was formed when mount mazama produced a large eruption and collapsed to form a caldera, which then filled with water forming a lake.

energy and particles

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.