Answer:
The color is considered dark if the rock appears as a dark gray to black (pyroxenes, the amphibole Hornblende, the mostly Ca-plagioclases near Anorthite, and Biotite mica. Density is a property that is proportional to the composition of the rock. The higher the amount of silica (felsic) the less dense the rock will be.
Explanation:
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B: Mudrock I’m pretty sure
The answer is; C
The study of plant and animal life in an environment is known as ecology. Anthropology is mainly defined as the study of humans, their behaviors and societal norms and values (such as politics, culture, religion, and language), in the past and present.
Archaeology is the study of human activity in the past, primarily through the recovery and analysis of the material culture and environmental data that has been left behind by past human populations, which includes artifactss, architecture, biofacts and cultural landscapes . Because archaeology employs a wide range of different procedures, it can be considered to be both a social science and a humanity and in the U.S, it is thought of as a branch of anthropology although in Europe it is viewed as a separate discipline.
A historian<span> is a person who studies and writes about the past and is regarded as an authority on it.</span><span> Historians are concerned with the continuous, methodical narrative and research of past events as relating to the human race; as well as the study of all history in time. If the individual is concerned with events preceding written history, the individual is a historian of prehistory</span><span>. Although "historian" can be used to describe amateur and professional historians alike, it is reserved more recently for those who have acquired graduate degrees</span><span> in the discipline. Some historians, though, are recognized by publications or training and experience.</span><span> "Historian" became a professional occupation in the late nineteenth century as research universities were emerging in Germany and elsewhere.
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Geographers study the earth and its land, features, and inhabitants. They also examine phenomena such as political or cultural structures as they relate to geography. They study the physical and human geographic characteristics of a region, ranging in scale from local to global.
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