Answer:
Heating and Pressure
Explanation:
Sandstone forms from beds of sand laid down under the sea or in low-lying areas on the continents. As a bed of sand subsides into the earth's crust, usually pressed down by over-lying sediments, it is heated and compressed.
Answer:
The Federal Interstate Highway System
Explanation:
When Eisenhower became president in 1953, he envisioned the construction of a nationwide interstate highway system that would link the country from coast to coast, and from north to south, connecting the main cities as well.
Eisenhower believed that such a system would greatly increase economic growth, and raise standards of living.
The Interstate Highway System was started in 1956 by the passing of the Federal Highway Act, and was only completed in 1992. It has had a cost of over 500 billion dollars, and has been mostly financed by an excise tax on fuel.
Even if the system is federal, the states own the parts of the highways that are located in their territory.
Heat flows from the reacting substances out to the surroundings in an exothermic reaction.
The thermal energy of the surroundings increases as a result of an exothermic reaction.
Heat flows in to the reacting substances from the surroundings in an endothermic reaction.
The thermal energy of the surroundings decreases as a result of an endothermic reaction.
Answer:
A biologist might designate regions based on continents, mountains, and bodies of water, because these are large areas unlike other things. For example, a biologist wouldn't designate a region over a 15 mile island.
Explanation:
