Why are humic substances and humus no longer viewed as being representative of organic compounds in soils?

Q: What are three Milankovitch cycles?

A: Milankovitch cycle describes the effect of changes in the Earth's movement on its climate over time....

Q: Suppose there are 10000.0 civilizations broadcasting radio signals in the Milky Way Galaxy at the mo...

A: Number of stars in the milky way galaxy= 9×1011 Number of civilizations broadcasting radio signals  ...

Q: Why do El Niño and La Niña events cause opposite weather climates around the world?

A: Climate is a long term average weather whereas weather is state of atmosphere and other meteorologic...

Q: Determine the total calories of a food having 5 g fat, 2 g protein, and 11 g carbohydrates.

A: One gram of fat contains nine calories. One gram carbohydrates and protein contains four calories ea...

Q: Question 11 Use the satellite images below to help you answer the following questions. Note that dar...

A: Mount Pinatubo is an active volcano in Philippine. In volcanic eruption, several gases escape from i...

Q: hemajor benefit obtained by zooxanthellae algal cells from their coral host is:a.protection from her...

A: Corals are exclusively marine organisms with dominantly benthonic and sessile modes of life. Zooxant...

Q: Wave-swept beaches are subjected to the same conditions as the intertidal community but support vast...

A: The wave swept beaches are part of the shore where sediments swept away under the influence of waves...

Q: Match the description or compound with the correct term. carbon dioxide [ Choose ] [Choose] nitrogen...

A: A primary pollutant is an air pollutant that is directly emitted to the atmosphere from the source, ...

Q: The FeAl intermetallic phase Is an BCC structure with Fe atoms at the corner and Al atoms at the bod...

A: The BCC unit cell is constructed keeping Fe atoms at each corner and Al atom at body-centered. Then ...

Q: What are advantages and disadvantages of renewable energy resources?

A: Renewable energy resources are resources that are never-ending in nature. They are sustainable resou...

Q: What causes wind?

A: The wind is defined as air in motion. It is the largescale flow of air. Winds are classified accordi...

Q: Explain the wide annual range of temperatures in Siberia?

A: Siberia is a vast continental region of Asia, situated in Russia. The extensive continental region i...

Q: In what ways could a massive outpouring of flood basalt affect the existence of species on Earth?

A: Volcanism is a geological event associated with tectonic plate activities. The magma from the mantle...

Q: On June 21-22 are the Sun’s noon rays directly overhead at the Tropic of Cancer, the equator or the ...

A: A solstice is a day when the sun reaches its maximum and minimum declination. It marks the days with...

Q: Is the discovery of new sources of oil keeping up with oil use? Is oil being made (by natural proces...

A: Oil or petroleum is the black color liquid crude found naturally in rocks. It is formed from the the...

Q: Area A Is located close to a volcanic vent, but area B is far away. What Is the expected distributio...

A: Volcanoes are the geologic features from which the hot magma erupts in the form of lava from the int...

Q: The difference in heat distribution between the poles and the equator is due to Earth’s a. orbit aro...

A: The Equator is the imaginary line on the surface of a rotating sphere, passing through the center of...

Q: What is global warming? Write any two consequences of global warming.

A: Global warming has become a serious concern in last couple of decades. The consequences of global wa...

Q: What is a coastal cell? Where does sand in a coastal cell come from? Where does it go?

A: Coastal cell is also called as sediment cell, littoral cell or coastal cell.

Q: Where are most atolls and guyots found?

A: An atoll is a coral reef, surrounding a lagoon. It is a ring shaped island or a series of islets. A ...

Q: Earth Science Question

A: The Earth's interior is differentiated into the crust, mantle, outer core, and inner core.   Disclai...

Q: List as many differences as you can between the Archean world and the world as it existed 1 billion ...

A: Archean Eon ranges from 4 Billion years to 2.5 billion years. There is Era in Archean eon, Eoarchean...

Q: Which statement describes the relationship between minerals and rocks?a). Minerals and rocks are the...

A: Rocks are naturally occurring materials in the Earth and on the Earth's surface. Rocks are essential...

Q: Explain why the entire pattern of isotherms has a more northerly location on the July map than on th...

A: Isotherms are the lines joined on the map with similar temperature. It is used to demonstrate the te...

Q: When will we run out of oil?

A: Petroleum is the term that means Oil. This is one of the important mineral fuels and is a complex mi...

Q: What is the solar equator?

A: The Earth's axis is tilted, hence the sunlight falls on the Earth's surface in an uneven manner. The...

Q: Out of sand, silt and clay which particles will settle down first in graduated cylinder during textu...

A: Texture refers to the size, shape, and orientation of sediments in a rock. Here we are considering o...

Q: At sea level, the normal percentage of carbon dioxide (CO2 ) in the atmosphere isA. 5% C. 78%B. 40% ...

A: Carbon dioxide is considered a form of gas in the air because it is much smaller than oxygen or nitr...

Q: What are the 5 oshens

A: Disclaimer - The word "oshens" is assumed to be typo for the word "oceans". The following answer is ...

Q: Why does the coolest temperature of the day occur about sunrise?

A: The heating of Earth is by solar radiation. The solar radiation gets trapped in the atmosphere and b...

Q: What is curious about the Neoproterozoic rocks known as cap carbonates?

A: Cap carbonates are layers of uniquely textured carbonate rocks such as limestone or dolomite, which ...

Q: What is the measure of the tilt of Earth’s axis ?

A: The earth axis is tilted at nearly 23.5° from the vertical. The tilt of the earth axis determined in...

Q: Explain briefly nuclear waste management

A: Nuclear waste is the waste generated from nuclear plants after utilising nuclear materials to produc...

Q: Explain the concept formation wettability challenges in brief ?

A: The wettability of a liquid is a liquid's ability to stick to or spread over a surface. Mercury is s...

Q: How would the shutdown of the North Atlantic Bottom Water formation affect carbon dioxide concentrat...

A: The temperature at the surface and in the layer of about 500 m depth of ocean is around 10°C. But at...

Q: 7. The photographs below shows two depositional features labeled A and B. Which terms correctly iden...

A: Delta is a discrete shoreline protrusion formed at a point where a river enters an ocean or other bo...

Q: 10. What is a vesicular texture? How did it form?

A: The texture is defined as the individual relationship of the mineral matter and glassy constituent i...

Q: Approximately how many asteroids that are 1.05 km in radius would it take to make a planet which has...

A: Given, Radius of asteroid= Ra= 1.05 km Therefore, Volume of asteroid= Va=43πRa3     =43π×1.053⇒Va=4....

Q: What happens to all those plastic water bottles?

A: Plastics are one of the most essential elements which are used on a daily basis. For instance, they ...

Q: which compound in the pair has the higher boiling point and explain why? Pentane or Butane

A: Alkanes are hydrocarbons consisting of C, H, where the bonds between the carbon atoms are a single c...

Q: The climate of regions adjacent to large bodies of water (like the Pacific and Atlantic coasts) usua...

A: Specific heat capacity can be defined as the amount of heat or energy required to raise the temperat...

Q: Input of solar radiation in the Northern Hemisphere peaks on 22 June and reaches a minimum on 22 Dec...

A: The radiation coming from the sun is called insolation. It consists of short wave radiation which is...

Q: What are the four common bedding structures of stratified rocks?

A: When sediments are deposited in layers one over the other, they form bedding structures. They can ra...

Q: Explain how shifts in weather patterns (changes in circulation of atmosphere and oceans) produce the...

A: Thee masses of water in the ocean that flows from one place to another place is termed ocean current...

Q: Global Warming. If the earth’s climate continues to warm, ice near the poles will melt, and the wate...

A: Global warming is the gradual increase in the temperature of the Earth's atmosphere. This is primari...

Q: How does the equilibrium theory of tides differ from the dynamic theory?

A: Tides are rise and fall in the water levels in water bodies due to the changes in gravitational forc...

Q: Describe in detail the use of GIS in Land use suitability analysis in Urban Planning. NOte: please a...

A: GIS stands for Geographic Information System. It is essentially a computer system that obtains, stor...

Q: Where are the largest coal deposits located?

A: Coal is an organic sedimentary rock of black-brownish colour. It is made of mostly carbon with minor...

Q: The graph below shows how the activity in counts per minutes (c. p. m) of 1.00g of processed carbon ...

A: if 100% of the activity in counts per minutes (c. p. m) of the processed carbon is 16, then 50% of t...

Q: Relative to an earthquake of magnitude 5 on the Richter magnitude scale, an earthquake of magnitude ...

A: A Richter scale is a scale to describe the power or magnitude of an earthquake. The magnitude scale ...