on April 16, 2022
What life was found during the Archean time?
Geologyphotosynthetic bacteriabacterial. The Archean coast was home to mounded colonies of photosynthetic bacteria called stromatolites. Stromatolites have been found as fossils in early Archean rocks of South Africa and western Australia. What life was found during the Archean time what began to evolve? During The Archean Eon the crust of the earth solidifies, oceans form,
on April 16, 2022
Where are igneous rocks formed?
GeologyIgneous rocks (from the Greek word for “fire”) form when hot, molten rock (magma) crystallizes and solidifies. Magma originates deep within the Earth, near active plate boundaries or hot spots. Magma that rises to the surface is called lava.Sep 11, 2019 Where are igneous rocks most likely found? Where Igneous Rocks Are Found. The deep
on April 16, 2022
How much damage did the 1964 Alaska earthquake cause?
Geology300-400 million dollars300-400 million dollars (1964 dollars). The number of deaths from the earthquake totalled 131; 115 in Alaska and 16 in Oregon and California.Mar 28, 2022 How much damage did the Great Alaska earthquake cause? A Costly Disaster The earthquake and ensuing tsunamis caused about $2.3 billion of damageThe earthquake and ensuing tsunamis caused
on April 16, 2022
What is the defining trait of all minerals?
GeologyMinerals always occur in nature, they are solid and are inorganic. They have a crystal structure and each mineral has a unique chemical composition.Apr 13, 2018 What defines a mineral? A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. Common
on April 16, 2022
What does social causation mean?
GeologySocial causation of disease is defined as the origin of illness that results from social conditions and social interactions. This definition assumes that human biological factors are not the sole cause of disease. What is an example of social causation? A social causation argument would say that being poor increases mental illness. Not having enough
on April 16, 2022
What happened at Lake Nyos?
GeologyAt 9:30 p.m. on August 21, 1986, a cloudy mixture of carbon dioxide (CO2) and water droplets rose violently from Lake Nyos, Cameroon. As the lethal mist swept down adjacent valleys, it killed over 1700 people, thousands of cattle, and many more birds and animals. What caused the disaster at Lake Nyos? Carbon dioxide was
on April 16, 2022
How is an ice age defined?
Geologyice age, also called glacial age, any geologic period during which thick ice sheets cover vast areas of land. Such periods of large-scale glaciation may last several million years and drastically reshape surface features of entire continents. What is an ice age simple answer? An ice age is a period in Earth’s history when the
on April 16, 2022
What are 5 ways that organisms can be preserved as fossils?
GeologyFossils form in five ways: preservation of original remains, permineralization, molds and casts, replacement, and compression. What are the 5 types of fossils of organisms? There are five types of fossils: Body Fossils. Molecular Fossils. Trace Fossils. Carbon Fossils. Pseudofossils. What are the 6 ways fossils can be preserved? What are the 6 types of
on April 16, 2022
What formation is created in the rift of a spreading sea floor?
GeologyThe phenomenon is known today as plate tectonics. In locations where two plates move apart, at mid-ocean ridges, new seafloor is continually formed during seafloor spreading. What is formed when sea floor spreads? Keeping Earth in Shape At subduction zones, the edge of the denser plate subducts, or slides, beneath the less-dense one. The denser
on April 16, 2022
What is a solid mixture of minerals or particles?
GeologyA rock is a natural, solid mixture of minerals or grains. These grains are made of mineral crystals, bits of minerals, or rock fragments. Sometimes a rock contains the remains of an organism or volcanic glass. Processes on Earth’s surface can cause rocks to break apart into fragments. What is a mixture of mineral and