Material A is mineral, material B is a rock, material C is a mineral and material D is a rock.
Explanation:
A mineral is a natural substance that generally is solid while rocks are made of a combination of different minerals, besides rocks are characterized by its texture, origin and composition while minerals are characterized by its hardness and color.
According to this definition we can appreciate that material A is only made of one material and it is characterized by its color so we can conclude that it is a mineral. Material B is composed by two materials so it is a rock. Material C is characterized by its color and appearance and it is made of the same elements, with this information we conclude that material C is a mineral. Material D is made of different elements and is characterized by its porosity texture what lead us to classify it as a rock.
Elements that are metals tend to lose electrons and become positively charged ions called cations. Elements that are nonmetals tend to gain electrons and become negatively charged ions called anions
By looking at the question and the photo listed above, the statement that will be true for all organisms is the energy is used by the organisms to obtain and transport materials, and to eliminate wastes. The correct answer choice is 4.
Full phase occurs when the Moon is on the opposite side of the Earth from the Sun and we see only the illuminated side. On that day it rises as the Sun is setting and sets and the Sun is rising. ... Waning Crescent phase occurs when the eastern edge of the Moon is lit but most of the visible surface is dark.
