A rock formed with 5000 atoms of a radioactive parent element, but contain5 only 625 radioactive parent atoms today, If the halt-life for the radioactive elernent is one million years, how old is the rock? O 4 million years old O 750,000 years old O 250,000 years old O none of these O 2 million years old

Q: Describe how geologists determined when the time period of Cambrian began and when it ended.

A: The first of the six periods of the Palaeozoic era. Sediments deposited during the period include th...

Q: How do we get around the limitations of personal experience personal prejudices, biases and personal...

A: How do we get around the limitations of personal experience personal prejudices, biases and personal...

Q: Questions: 1. a)What is the Name of the structure: b) Strike Dip Direction: Dip Angle.. . 3) On the ...

A: The beds of undisturbed sedimentary rock formations generally occur in a horizontal deposition. Duri...

Q: Four seismic stations pick up seismic waves from the same earthquake. Which seismogram represents se...

A: The sudden and temporary vibration set up on the earth surface that ranges from a faint tremor to a ...

Q: What is the temperature of a star whose maximum light is emitted at a wavelength of 290nm

A: The temperature of a star can be calculated using the formula, T =2897000λmax kelvin where, T=Temper...

Q: How is climate change connected to our emotionally？

A: Climate change includes both global warming caused by humans' activities and long-term change in wea...

Q: Explain the the relationship between ocean temperature and rainfall intensity and how it is an indic...

A: Explain the the relationship between ocean temperature and rainfall intensity and how it is an indic...

Q: 9) (a) Where is most of the mass in the solar system? (b) If we were to draw a circle centered on th...

A:  If we were to draw a circle centered on the Sun and gradually increase the size of this circle alon...

Q: a. What is the elevation of point A on the topographic map? b. What is the approximate gradient betw...

A: Topographic maps: Topographic maps are maps that show the three-dimensional features of the surface ...

Q: 1.It refers to activities or phenomena that occur on the earth surface

A: The term geomorphology was first used by Lauman in the year 1858 to study various landforms, their f...

Q: What will happen where two continental plates collide at a convergent boundary? A)one plate is subdu...

A: The lithosphere is the outermost layer of Earth, which is consists of the crust and the upper layer ...

Q: What are sustainable farming systems, or sustainable agriculture? Are there incentives for farmers t...

A: Farming and agriculture are two major aspects which have been important to the mankind ever since th...

Q: If tectonic movement continues at its current rates and directions, the Mediterranean Sea will be de...

A: If tectonic movement continues at its current rates and directions, the Mediterranean Sea will be de...

Q: Which of the following is used only as a last resort in IPM? A. biological control B. cultural contr...

A: Integrated pest management (IPM) is a scientific method or approach for controlling populations of p...

Q: 2. a) The name of the structure: North 450 450 45 450 45 b) Strike Dip Direction: Dip Angle..

A: The beds of undisturbed sedimentary rock formations generally occur in a horizontal deposition. Duri...

Q: What are different stakeholder perspectives on the desertification through agriculture, both domesti...

A: What are different stakeholder perspectives on the desertification through agriculture, both domesti...

Q: Which cartoon correctly illustrates the tectonic motion associated with a Watadi-Benioff zone?

A: The mobile plate is the plate that divides the earth lithosphere. The plates are floating above the ...

Q: Define the term: mass extinction.

A: The elimination of 'taxon'. This may take place in several ways. In the simplest case the taxon disa...

Q: The lithosphere is broken down into slowly moving pieces of rock called...

A: The outer shell of the earth consists of denser oceanic crust and lighter continental crust and whic...

Q: he number of white-tailed deer in Staten Island and Long Island, NY have increased significantly. Ho...

A: White-tailed deer have increased in the regions. According to scientists, the capacity is 8 deer per...

Q: Explain how observations of tropical cyclone genesis regions prove that having warm sea surface temp...

A:  Explain how observations of tropical cyclone genesis regions prove that having warm sea surface tem...

Q: What catastropic events do geologist suggest caused the mass extinction in the Permian–Triassic exti...

A: What catastropic events do geologist suggest caused the mass extinction in the Permian–Triassic exti...

Q: DESCRIBE two characteristics of fossil fuels that make them awesome, or more advantageous than alter...

A: Fossils are the remnants of animals and plants that lived long ago. Therefore, fossils consist of or...

Q: ect the correct answer. ich statement does not support the explanation for how planets formed by acc...

A: A planet is a divine body which (a) is in circle around the Sun,(b) has cleared the neighborhood aro...

Q: .What is the fundamental difference between energy flow and nutrient flux? 2.What is the role of de...

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question s...