Explanation:
Elements in same group show same valency because they have same number of electrons in ther outermost shell i.e. Valence shell. Since valency depends upon the valence electrons so they have same valency. Elements in the same group have same valancy.
The appropriate response is repression. It is the mental endeavor made by a person to direct one's own particular yearnings and motivations toward pleasurable impulses by barring the longing from one's cognizance and holding or quelling it in the oblivious.
Answer:
<em>CERCLA set up a trust fund to fund both cleanup and enforcement actions. Sometimes, the fund is called the Superfund.</em>
Explanation:
<em>On December 11, 1980, Congress passed the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), commonly known as Superfund.</em>
The law passed a tax on both the chemicals and petroleum industries which established wide Federal power to respond directly to leaks or potential releases of hazardous materials that could threaten public health or the atmosphere.
$1.6 billion was collected over five years, and also the tax went to a trust fund to clean up hazardous waste sites that had been neglected or unregulated.
Answer:
Birds’ feathers are designed to be light but very strong, flexible but very tough. Although it looks like feathers grow all over a bird, they actually grow in specific areas called feather tracks. In between the feather tracks are down feathers. This keeps the body weight down.
Feathers are made of a tough and flexible material called keratin. The spine down the middle, called the shaft, is hollow. The vanes are on the two halves of the feather. They are made of thousands of branches called barbs. Because there are many spaces between these barbs, a feather has as much air as matter.
Explanation:
