At the first question is A. 60 year old
Condensation is responsible for the formation of clouds because it is the process by which water vapor in the air is changed into liquid water, thereby forming clouds.
Answer:
<h2>Petroleum that is worthwhile extracting is usually found trapped in layers of permeable rocks by other layers of impermeable rock, but more recently reserves of gas and oil are being extracted from shale which is an impermeable rock but is porous in the sense that there are spaces (pores) within its structure in which ...</h2>
Answer:
Nguồn lao động nước ta dồi dào và tăng nhanh.
Explanation:
Mỗi năm tăng thêm hơn 1 triệu lao động.
