According to the web pages provided above, where did the chert form? select one: a. it formed at the bottom of the ocean where sea surface temperatures were warm. it was then transported on land by plate movements. b. it formed at the bottom of the ocean where sea surface temperatures were cold. it was then transported on land by plate movements. c. it formed at the bottom of the ocean at a time when sea level on the coast of california was much higher. when sea level fell, the chert was exposed in cliffs. d. it formed at the bottom of the ocean at a time when sea level on the coast of california was much higher. it was then uplifted on land by plate movements.

During metamorphic processes, increased pressure and temperature can affect the of minerals in rock. rocks subjected to very high pressure are typically than others because mineral grains are squeezed together, and the atoms are more closely packed. during metamorphic processes, water facilitates the transfer of ions between and within minerals, which can the rate at which metamorphic reactions take place. the growth of new minerals within a rock during metamorphism has been estimated to be about per million years. metamorphism is commonly associated with convergent plate boundaries, where two plates move toward each other. during contact metamorphism, a large intrusion will contain thermal energy and will cool much more slowly than a small one. metamorphosed sandstone is known as the metamorphic rock made from metamorphosed shale, was once used to make blackboards for classrooms

What would have happened to portugal’s trade if they had not found a way to sail around the tip of africa

The oil and gas found in the middle east are regulated by a. organization of petroleum exporting countries b. southwestern asian oil refineries c. north atlantic treaty organization