When was the first hydrothermal vent community found in the Indian Ocean?

Q: What major climatic and biological events happened during thePleistocene?

A: The environment throughout the Pleistocene was dynamic, changing dramatically in response to climate…

Q: Explain what causes the mantle to '' flow ''?

A: The rocks that make up Earth's mantle are mostly silicates—a wide variety of compounds that share a…

Q: Describe the geological points at which mass extinctionsoccurred and give one proposed cause for…

A: Mass extinction can be defined as the event in which a huge amount of loss of biodiversity took…

Q: Explain how tectonics cause tsumanis

A: Earthquakes on converging tectonic plate boundaries are the most frequent source of tsunamis.…

Q: Which organisms came and went during the Mesozoic era?

A: MESOZOIC ERA:- It is the era when the conifers, reptiles, dinosaurs were present in plenty of…

Q: The term “Cambrian explosion” refers to (a) an increase in biodiversity. (b) a mass extinction. (c)…

A: Answer: Introduction: The Cambrian explosion or Cambrian radiation was an incident about 541 million…

Q: Analyze the following data table indicating the amount of Carbon Dioxide in Earth's atmosphere at…

A: Earth`s temperature is in direct correlation with the levels of CO2 which is the primary greenhouse…

Q: List the major events of the Precambrian supereon and of thePaleozoic, Mesozoic, and Cenozoic eras`

A: Precambrian supereon consists of the period before Cambrian and hence the name pre-Cambrian eon. It…

Q: Have atmospheric CO2 concentrations of about 200 ppm occurred over the past 400,000 years?

A: CO2  CO2 or carbon dioxide gas is very important gas present in air it keeps our earth warm and…

Q: What is the name of the hydrothermal vent community on the mid-Atlantic ridge found in 1993, and…

A: Hydrothermal vent communities Communities found in hydrothermal vent, i.e. a fissure on seafloor…

Q: Before the emergence of life of what gases was the earth's primitive atmosphere constituted?

A: the primitive atmosphere was reducing in nature it had little or no oxygen  it was rich in water…

Q: Give two lines of evidence supporting the asteroid impact hypothesis for the Cretaceous extinctions.

A: The evidence is given below.

Q: Why were fireweed and knotweed samples not found in the ecotone area?

A: In ecology, ecotone area is defined as the area of transition between two biotic communities or area…

Q: Which of the mass extinctions was the largest? What percentage of life went extinct during that…

A: Mass extinction is defined as the dis-appearance of a large scale of biodiversity (animals +plants…

Q: In which era of the Geologic Time Scale are we currently living ir O Cenozoic O Mesozoic

A: 2nd answer is cenozoic

Q: Question 21 Use the information in the diagram below to answer the questions. R A \U .K A) Which…

A: The age or time of rock formations determined by the location of rock under the earth layer. Fault…

Q: What geologic resource exist in the ocean?

A: Marine geology is responsible for focusing on areas that are affected by the oceans which will…

Q: What would appear as the pioneer organisms on bare rock?

A: The first living things to invade such an area and establish themselves in it are known as pioneer…

Q: Why was it believed that life began in the seas and not in land or air? * Land and air were…

A: Option a is correct  Land and air were inhospitable places for life during the archean eon.

Q: Which of the following pieces of evidence prompted researchers to abandon the hypothesis that a…

A: Iridium is an element belong to the platinum group and is the rarest and most densest element. Its…

Q: Which era is furthest in the past? O A. Cenozoic O B. Mesozoic O C. Paleozoic O D. Precambrian

A: According to the timeline of the evolutionary history of life, all present-day organisms have been…

Q: What two geoscience process shaped the Hawaii islands

A: Hawaii is the only island state of the United States of America in the Pacific Ocean. The Hawaiian…

Q: Given the life-style we live today, what pre-historic period gives us the ability to heat our homes,…

A: the ability to heat our homes, run our cars, and have a comfortable life was the ability of humans…

Q: What caused the development of banded iron formations?

A: The oxygen that is presently in the Earth's environment was not there in the starting. Early life…

Q: Assuming that the early lithosphere had already been created, which sphere (the atmosphere or the…

A: Introduction The Stiff, Outermost Shell Of A Terrestrial-type Planet Or Natural Satellite Is Called…

Q: Cenozoic Era

A: The Cenozoic era began about 66 million years ago and continues into the present, is the third era…

Q: Which is older the limestone or the basalt dike?

A: Fossils are remnants of the body structures that are preserved naturally in the sedimentary rocks.…

Q: The ends of many eras and periods in the geologic time scale are characterized by?

A: Introduction: Paleontology is the study of the earth's history of lifeforms, which is based on…

Q: If Marine communities dominated during the Early Paleozoic, why move to land? What would an…

A: Paleozoic era was a major interval of geologic time that began 541 million years ago and ended about…

Q: Could the First Biological Molecules Have Formed NearVolcanoes on Early Earth?

A: In 1953, Stanley Miller conducted an experiment in the laboratory of Harold Urey to understand the…

Q: What are the steps in the process of seafloor spreading?

A: Seafloor spreading is the process by which new oceanic crust is formed by the upwelling of magma…

Q: Directions: Using the Geologic Time Scale, copy and complete the table below by supplying the blank…

A: Paleozoic era The era of ancient life began around 544 million years ago, when creatures formed hard…

Q: Which event in Earth’s historyeventually lead to the evolution of multicellular lifeforms?

A: The process of evolution of multicellular life from simpler, unicellular microbes was an important…

Q: Which of the following evidence was used by Wegener to support his hypothesis that the conti- nents…

A: Alfred Wegener is a German scientist who proposed a hypothesis called Continental drift in the early…

Q: What is the water pressure in the deepest ocean trenches?

A: Pressure increases down the depth, it can be up to eight tons per square inch or equivalent to 1000…

Q: Briefly describe the distinguishing organisms and major biological events of the Ediacaran period…

A: Molecular systematics assists biologists in interpreting the fossil record in order to determine the…

Q: Geologists searching for clues to the ancestors of modern-day vertebrate land animals should look in…

A: Fossils are defined as the remains or impression of living things that were once livings in the…

Q: Discuss how excess carbon dioxide lead to a mass extinction in the Permian period.

A: A mass extinction event is when species disappear a lot quicker than they are replaced. This is…

Q: Who first proposed the continental-drift theory? What three sources of evidence convinced geologists…

A: Science refers to the study of nature and behavior of natural things. It also refers to the…

Q: How does subduction cause the formation of land mass like mountains and volcanoes?

A: Subduction is a process in which tectonic plates slide beneath each other and merge with the mantle…

Microbes

Microbes are microscopic living organisms that can only be detected with the help of specialized laboratory equipment called a microscope. These living organisms are so small that they are not visible to the naked eye.