Answer:
4 billion years
Explanation:
Scientists have found the oldest known rocks on Earth. They are 4.28 billion years old, making them 250 million years more ancient than any previously discovered rocks. Earth formed about 4.6 billion years ago from a disk of gas and dust circling the sun.
Somalia is 233 miles northeast of Ethiopia - False;
Salalah, Oman is 385 miles northwest from Yemen - False;
The distance between the two East African nations of Somalia and Ethiopia is actually 0 miles. The reason for that is that these two countries share a border, thus there is no distance between their territories, apart from the imaginary line that is the border.
Salalah, Oman is 384 miles away from Yemen, but it is not toward the northwest, instead it is toward the northeast. Oman as whole is located on the northeast of Yemen, thus Yemen comes to located southwest of Oman.
Answer:
Direct causes of deforestation are agricultural expansion, wood extraction (e.g., logging or wood harvest for domestic fuel or charcoal), and infrastructure expansion such as road building and urbanization. Rarely is there a single direct cause for deforestation
Answer:
Human activity is the main cause of climate change. People burn fossil fuels and convert land from forests to agriculture. ... Burning fossil fuels produces carbon dioxide, a greenhouse gas. It is called a greenhouse gas because it produces a “greenhouse effect
Climatology is a subspeciality of environmental science. The correct option among all the options given in the question is option "B". Climatology is actually the scientific study of climate. The role played by the clouds is an important part of the study of climatology. This is a modern field of study that can easily be considered as a part of physical geography or earth sciences.Some of the famous early climate researchers include Edmund Halley, Benjamin Franklin, Francis Galton and Helmut Landsberg.
