The Earth's crust is broken up into pieces called plates. The crust moves because of movements deep inside the earth. Heat rising and falling inside the mantle creates convection currents generated by radioactive decay in the core. Earth's solid crust acts as a heat insulator for the hot interior of the planet. ... Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth's crust. Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth. Magma in the Earth's mantle moves in convection currents. The hot core heats the material above it, causing it to rise toward the crust, where it cools. The heat comes from the intense pressure on the rock, combined with the energy released from natural radioactive decay of elements. Description Magma or magma, meaning in Arabic, magma, magma, or magma, which is a mixture of fused silicon materials, or in other words with. Magma forms under the Earth's crust or other layers of the Earth.
C. cells . are the basic units of life
C. Smaller societies rely more heavily on legislation and military forces.
Answer: C) Prokaryotes convert nitrogen-containing molecules into forms that can't be used by other organisms.
Prokaryotes are the organisms that do not have a membrane bound nucleus, mitochondria and other organelle. They ranges in size of diameter from 0.1–5.0 µm.
Example:<em> Escherichia coli, Sulfolobus acidocaldarius archeobacterium </em>
Decomposers, play an important role in nitrogen cycle. Nitrogen gas is converted to nitrate compound by nitrogen fixing bacteria which are present in root nodules of leguminous plants.
Example: <em>Azotobacter </em>
The Galapagos are considered 'young'because they were created relatively recently in geologic history. The islands are located on the Nazca oceanic plate and were formed by hot spot volcanic activity. As the tectonic plate moves over the hot spot repeated eruptions form islands. The Galapogus islands are thought to be no more than 5 million years old.
