Answer:
it is said that the Ice Ages began 2.4 million years ago and ended approximately 11,500 years ago.
Explanation:
During this time Carbon-Dioxide (a poisonous and warming gas) levels rose dramatically by about 180 ppm to 280 ppm.
This caused the major retreat of glaciers that ran across continents...
There were other gases but they were in VERY small amounts...
(APART FROM OXYGEN)
Answer:
Explanation:
1. made from a dissolved mineral called calcite limestone
Limestone is a sedimentary rock derived from precipitation of the mineral calcite from a solution.
2. made of large grains of sand sandstone
Sandstone is a sedimentary rock derived from aggregates of sand grains.
3. made of very tiny grains of clay shale
Shale is a sedimentary rock made from very fine grain of clay minerals.
4. formed from sandstone quartzite
Quartzite is a metamorphic rock derived from a protolith of sandstone. When sandstone is subjected to pressure and temperature beyond that of metamorphism.
5. fine-grained rock with few or no crystals basalt
Basalt is an igneous rock dark in color and fine grained.
Answer:
ok why do we care haha i am just kidding .......
Explanation:
<h2>ok what ever i mean don't really care all about ur question they only care about my question haha u poor should i tell them that hmmm...........yes i will </h2>
Answer with Explanation:
Among all the scientists in the world, it is Thomas Edison whom I'd like to emulate. His invention of the light bulb is phenomenal because I consider it as one of the greatest invention in the history of mankind. Although he had a hearing problem, he managed to focus on his invention. As a businessman, he was always hardworking, even at a young age, which is truly admirable.
