Answer:a. increased; remained almost unchanged.
Explanation:
Food and water are essentials but, air is a resource we need to only bring around in space.
yw, I have been losing brainliests since last week, please mark me it so I can get em' back
Most of Maghreb (North Africa) resembles Arabian peninsula the most. That is the Physical geography part. Egypt from the earliest times was demographically, ethnically, culturally & socially contiguous with the Levant (Asia's West Coast on the Mediterranean Sea) from where the influence spread west till the Atlantic Ocean. Then (in those times) they weren't aware that theirs was a different continent (as most American school children think now, "if they are from different continents they should be different").<span> </span>
The correct answer is letter A
On the morning of January 24, 1848, carpenter James Wilson Marshall and his staff worked on the construction of a sawmill at John Sutter's ranch in the Sierra Nevada region of central California. Marshall had to bypass a stream to install the saw, moved by the force of the water. When he looked at the muddy bed of the Americans' river, something caught his eye: there was something shining there in the sunlight. It was gold.
The gold that flowed in California was generous. In the first months after the discovery, it was possible to collect the nuggets directly from the soil. Just crouch and pick it up. The precious metal was found in riverbeds and in ravines that flow. Mexican Antonio Franco Coronel, for example, left the job of teaching in Los Angeles and in three days of mining collected 4.2 kg of gold.
I believe the answer is: C. federal system.
In a federal system, the central government granted each states the freedom to govern themselves as long as they do it within the scope of legislature that created by the central government. In this system, the states must bow down to the central regulation if there is any contradiction between states and federal laws.