The horizontal rows<span> in the </span>periodic table<span> are periods, while the vertical </span>rows<span> are </span>called<span> groups. </span>
Answer: The answer is A. I just did the assignment.
Explanation:
Answer: B. Metamorphic rocks
Explanation: Metamorphic rocks are those that have undergone changes due to extreme heat and pressure. Thus, the rock, from which it becomes a metamorphic rock, is heated at temperatures above 150-200 ° and exposed to a pressure of 1500 bar. In this way, the structure of the rock is changed, in terms of the arrangement of the atoms, and the result is a change of physical and chemical properties. There are two basic types of metamorphic rocks: foliated and slate. Generally, some of the metamorphic rocks are anthracite, schist, quartzite, marble, etc.
Answer:
D. Government.
Explanation:
Cities such as Geneva, Switzerland; Brussels, Belgium; and Washington D.C., are considered global cities primarily due to their influence in world <em>government</em>.