What is the average iridium content of rock 0.5 m below the K–Pg boundary layer?   0.30 ppb   41.6 ppb   0.36 ppb   0.25 ppb

Q: You have 5 acres of land that you plan to use for generating electricity. You can either use the lan...

A: The solar output energy can be calculated by using the following equation, P=AηCI Here, A is the are...

Q: what is life? Could it have developed without oxygen?

A: The physical existence that rises, acts, defines, reacts, grows, gives rise to another physical exis...

Q: What is the mode of preservation of this fossil?

A: There are two main modes of preservation of fossils: with and without modification. Preservation wi...

Q: how does the force of gravity cause tidal coupling between celestial objects

A: Tides are the periodic rising and falling of sea level that occur daily throughout the ocean. As the...

Q: Examine the diagram above. Where do terrigenous sediments accumulate? Why do they accumulate here?

A:   Terrigenous sediments originate from erosion of rocks, volcanic eruptions, and blown dust from the...

Q: Sustainability

A: Sustainability depicts how biological systems, air quality and manageability of our resources should...

Q: What statement correctly describes the rock layers?

A: A branch of stratigraphy where fossils are used to find the relative ages of the rocks and the corre...

Q: Sketch, label, and describe how a placer deposit accumulates and explain how these placer deposits a...

A: The natural separation of heavy minerals from light ones by moving water, air, or gravity is called ...

Q: In the context of galaxies and galaxy formation, what are tidal streams, and how are they created?

A: When a smaller galaxy merges with a larger one, it leaves behind a trail of stars that are stripped ...

Q: What are the positive and negative impacts of fracking? Should fracking be banned? How should we dis...

A:   Fracking is a process through which rocks are fractured by a high-speed liquid pumped through a ho...

Q: Explain why a rise in oil prices drives an increased interest in renewable energy sources.

A: The energy sources which are mainly associated with nature and infinite in amount, are known as rene...

Q: Describe a quasar

A:   A quasar or, quasi-stellar object is an extremely luminous, powerful, and energetic object present...

Q: You find a 2,400,000 year old rock formation on a plate that is spreading at 12 cm/year, how far is ...

A: Mid oceanic ridges are the areas where new crustal rocks are formed. The oldest crustal rock is alwa...

Q: An increase in the amount of particulatematter (dust and smoke) in the atmosphere mayresult in coole...

A: The particulate matter, also known as aerosol particles, is the small particles suspended in the air...

Q: Please hurry (if you can)

A:   The Ring of Fire is an outcome of plate tectonics that is the movement and collisions of lithosphe...

Q: Environments change through geologic time. When sea level rises or falls, sediments which were depos...

A: The sea-level rise and fall result in the deposition of various types of sediments. When the sea lev...

Q: galaxies and quasars are the most distant objects in the universe. Would you expect to be able to me...

A: The setup of stars, planets, satellites, gases, dust, and other space objects bounded by gravitation...

Q: What effects does the surface-wind pattern have on the circulation of the oceans? Why do ocean curre...

A: The movement of the ocean occurs along the ocean's surface in predictable ways. The two types of cir...

Q: Using the figure above, if Earth orbited this star, how far along the timeline would it get? Part 1 ...

A: tstar = MsunMstar2.5 tsun = 11.52.5 x  11 x 109 years = 3.991 x 109 years  

Q: Five inches of your map represents how many miles on the ground?

A: On the map, using the scale at the bottom right side of the map.  0.6875 inches represent 40 miles F...

Q: A liquid has a volume of 40.5 mL and a mass of 44.6 g. What is the specific gravity of the liquid?

A: The specific gravity of any liquid is defined as the ratio of the density of the liquid to the densi...

Q: Saline soils can be reclaimed by flushing these soils with clean irrigation water. To reclaim sodic ...

A: During the reclamation process of sodic and saline-sodic soils, the sodium cations (present in high ...

Q: how does the force of gravity cause tidal coupling between celestial objects

A: Tides are the periodic rising and falling of sea level that occur daily throughout the ocean. As the...

Q: A unique property of water is that it ___.     Has a high heat capacity     Can easily expan...

A: One element of oxygen and two-element of hydrogen together form the water. Water is a tasteless and ...

Q: All of the following are true about fossils fuels EXCEPT:   a They are renewable resources.  b They ...

A:   Coal and petroleum are fossil fuels. Fossil fuels are dead remains of plants and animals. They wer...

Q: why do lakes occupy some depressions

A: Lakes Lakes are the localized water bodies, which are surrounded by the land. They may be natural or...

Q: Bioclastic sedimentary rocks of organic origin would most likely be formed from

A: The sediments rich in carbonate consisting of the shells or the fragments of once-living organisms a...

Q: How are spicules formed in the Sun’s chromosphere?   A) Spicules are formed from material on the t...

A: A powerful and dynamic, very fast speed travelling plasma in the chromosphere of the Sun is known as...

Q: What is the difference between relative and radiometric age dating?

A: To know the age of the rock or any dead organism the scientist uses some types of age determining me...

Q: Refer to the figure below, which shows a lava flow radiometrically dated at 275 my and an igneous di...

A: The relative age (from oldest to youngest) of the rock formations follows the sequence: Metamorphic ...

Q: Please do a, b, and c. (Answers are located on the bottom. Please show me the work.) Answers: a)8.30...

A: An American seismologist named as Charles Richter developed a scale in 1935 for the measuring of the...

Q: In what kind of environment was this rock likely deposited?     A lake     Very close to...

A: This rock looks like a schist, a kind of metamorphic rock.  It shows high-grade metamorphism. It con...