When geologists want to study an active earthquake fault, they often rely on a trenching study. ... They brace the walls, if needed, to prevent cave-ins, then they climb down into the trench and carefully map its walls, looking for signs of past earthquakes and ground movement.
<u>Answer:</u>
Rising sea levels recorded due to melting glaciers can be considered an observable indication of global warming
<u>Explanation:</u>
The glaciers in the sea are melting due to global warming.This is occurring due to the increase in the global temperature. Year after year, higher temperatures are being recorded and this heat in turn is melting the Arctic glaciers thus adding on to the level of the oceans.
The increased temperature will also disrupt the fauna and floral life. All automobiles don't necessarily have to contribute to global warming. There exist eco-friendly automobiles as well.
Answer:
According to the fossil record, life on Earth evolved 3.5-4.28 billion years ago in the form of what? Primitive bacteria that lived in rocks on the deep ocean floor. To investigate the origins of life on Earth, scientist Stanley Miller set up an experiment.
answer: Primitive bacteria
Explanation:
1- The terrestrial lithosphere is composed almost of 80% by igneous rocks, they are also known as magmatic rocks and are formed at high temperatures due to magma solidification, they come from the superior mantle and terrestrial coast. Its texture is super resistant with significant hardness to obtain minerals and other derived materials. They can be divided into extrusive and intrusive.
2- Through experiments, Bowen has defined a sequence of mineral formation when a magma begins to cool. There are two types of magmatic differentiation defined by Bowen, the continuous series and the discontinuous series. In the continuous series the internal structure of the magma is not altered and all minerals have iron and magnesium, they are formed: aluminum, silica and sodium and calcium.
In the discontinuous series decreasing the temperature reacts the previously formed mineral with the existing liquid, and thus a new mineral with different internal structure and composition is formed. They are formed: olivine, pyroxena, amphibole and biotite.
