Environment related opportunities for service include lake cleanup. The correct option among all the options that are given in the question is the first option or option "a". There are several other types of services also related to environment. I hope that this answer has come to your help.
Water and air both have oxygen and due to the contamination in the oxygen both water and air suffer
(i) a. igneous
(ii) b. core
(iii) b. minerals
(iv.) a. sedimentary rock
(v.) b. crust
Answer:
Option (D)
Explanation:
Historical geology usually refers to the study of the changes and the variation that occurs at or below the surface of the earth. In simple words, it mainly involves the study of past events. This includes the variation and evolution of different life forms that existed on earth over a time of about 3.8 billion years until the present. It basically comprises the important part of geology namely Paleoclimatology, Paleontology and Paleoseismology. This historical geology is also known as Paleogeology.
Thus, historical geology involves the biological changes that occur over a definite time.
Thus, the correct answer is option (D).
<span>a relief map shows the difference between elevations in an area, and a physical map shows the natural features of the Earth.</span>
