bA 510-million-year-old Burgess Shale animal similar in form to today's arthropods. From British Columbias Burgess Shale formation, the fossil of a segmented marine animal (an onychopho- ran) about 560 million years old. A 500-million-year-old trilobite fossil. Trilobites were once very abundant in the ocean, but all have died out. The Burgess Shale formation is seen in the background. Figure 15.2 Ancient marine animals. Chase Stu dio/Science Sou rce MICHAEL MELFORD/National Geographic Creative Chase Studio/Sc ience Source

Q: How man has altered the atmosphere, biosphere, hydrosphere, geosphere and as a sequence the Earth sy...

A: Man has altered the different domains of the earth by farming, building structures, urbanization, mi...

Q: 4. What are three examples of how the earth and ecosystems began to heal itself when the quarantine ...

A: As the spread of the novel coronavirus (COVID-19) stimulated, the whole world embraced a curfew/lock...

Q: The study of the motion, density, and temperature by analyzing the way the solar surface oscillates ...

A: Ever since the beginning of the Universe, matter and energy were created. These matters and energy e...

Q: How do glaciers promote chemical weathering?

A: Weathering is the process by which the chemical in moving water act on the ricks and minerals and ch...

Q: What causes day and night?

A: The earth revolves around the sun just like the moon does around the earth. The earth has a spherica...

Q: Discuss the use and importance of Forest Resources.

A: Forest are type of ecosystem in which high density of trees occur in a large area of land. Trees dom...

Q: A _______________ is believed to occur when energy, stored in a twist in the solar magnetic field ab...

A: A solar flare is believed to occur when energy, stored in a twist in the solar magnetic field above ...

Q: What causes the global circulation of water deep within the ocean?

A:  Ocean water is constantly moving . Surface waves or movement is driven by the winds and deep ocean ...

Q: Why were evaporite deposits widespread in Europe and North America during Late Permian time?

A: Evaporites are the sedimentary rocks arranged in layers with crystal sediments . They form from brin...

Q: During the Maunder minimum, Europe and North America experienced a period of unusually   a. wet ...

A: The Maunder-Minimum is called the prolonged minimum sunspot and is a rare sunspot event. The event o...

Q: List some adverse geologic structures inside hills that facilitate mass movements.

A: Mass movement is also called mass wasting, which is bulk movements of soil and rock debris down the ...

Q: What two kinds of flying vertebrates evolved during early Mesozoic time?

A: The geological timescale is the systematic classification of the chronological data according to the...

Q: The ocean is becoming more acidic as it absorbs more carbon dioxide. What effects could this increas...

A: Let us discuss something about marine organisms, Marine organism are those organisms which are livin...

Q: How do neritic sediments differ from pelagic ones?

A: Based on the depth the zones in oceans are classified and it is referred to as ocean bathymetry. The...

Q: Sunspots   a. are cooler than their surroundings.   b. are regions where material is rising ...

A: Sunspot are temporary phenomena on sun photosphere or surface which are darker in appearance than th...

Q: In eastern North America, mountain building progressed from New England to Texas during Paleozoic ti...

A:        During the Palaeozoic era, many mountain building activities flourished. But the major mounta...

Q: Captain James Cook has been called the first marine scientist. How might that description be justifi...

A: Cook had set new norms of meticulousness in revelation and seamanship, in route, map making, and the...

Q: Number  4 to 6

A: 4) San Isidro, a low lying area was recently affected by severe flooding that resulted in stagnant w...

Q: Which group of animals is Earth’s most successful (by nearly any definition of success)?

A: Phylum Arthropods are the earth's most successful by nearly any definition of success. They are the ...

Q: What are the mechanisms by which conservation tillage promotes soil resilience

A: Soil is a mixture of mineral water, organic matter and living organism and decaying matter of living...

Q: Best Climate type for Frost Wedging, Clay Formation, and Dissolving.

A: Weathering is a natural process f Insitu physical degradation and chemical disintegration of rock. C...

Q: Advantages and Disadvantages of Soil and Water Conservation Measure

A: Conservation is something we use to define as the method and technique that protects natural resourc...

Q: Which of the following describes the sequence of the layers of the solar atmosphere from the inside ...

A: The Sun is the central star of our Solar System. It is nearly spherical, formed of hot plasma. Its r...

Q: Is recovery of fresh water from seawater economically viable?

A:  seawater is present on large quantity on the earth which makes up to 96 to 98 % of all the water pr...

Q: 9) Please answer the question in the picture

A: The Richat structure, which is termed as Eye of the Sahara or Eye of Mauritania.

Q: What controls the ratio of magnesium to calcium in the ocean? How have changes in this ratio influen...

A: The waters of the seas and oceans are rich in salts, especially calcium and magnesium salts, which c...

Q: 1) The Caribbean is surrounded by all different types of plate boundaries.  the green dots on the m...

A: From observing the map of recent earthquakes, the epicentre of the particularly large earthquake occ...

Q: Why do seasons change?

A: The solar system is a gravitationally bound system of planets, moons, comets, etc. around the sun. E...

Q: What is an animal? How is an animal different from an autotroph?

A: The organism that produces organic compounds that are complex with the help of carbon through CO2  b...

Q: How is bilateral symmetry different from radial symmetry?

A:  Symmetry is a balanced distribution of the body shape, there are different categories of symmetry l...

Q: Explain how we know that recent climate change is human-caused.

A: Climate change is defined as the variation in the climate which affected directly or indirectly by t...

Q: ____________________________ produced by atomic transitions in the presence of a strong magnetic fie...

A: Option c i.e. the zeeman effect is the correct answer. 

Q: What is the role of conservation in reducing soil salinity and sodicity?

A: Salinity is a rising in the condensation of salts, like sodium, chloride and boron, in the plant roo...

Q: How might climate change affect our water supplies?

A: Climate change refers to alternation in climate patterns, it can be observed in global temperature r...

Q: How much faster is the speed of sound in water than in air?

A: Firstly, let us discuss something about sound, Sound: Vibrations that travel through the air or anot...

Q: How is a free wave different from a forced wave?

A: Waves are the moment of energy through a medium . They occur at the boundary with the or outside the...

Q: What is the role of conservation in reducing soil salinity and sodicity?

A: Soil Conservation is practised all over the world. It not only protects the soil from erosion but al...

Q: Answer clearly

A: According to the plate tectonics theory, the surface of the Earth is made up of various hard lithosp...

Q: Please help on question 5 6 and 7

A: An air mass is a large volume of air characterized by fair and uniform characteristics such as tempe...

Q: Explain some Soil-forming factors ?

A:  Soil is a mixture of mineral water, organic matter and living organism and decaying matter of livin...

Q: When referring to the absorption lines in a spectrum, the photons of specific wavelength are absorbe...

A: The Sun is said to be producing an osmosis spectrum. It has these dark lines placed all across its s...

Q: which one is life science, earth science and physical science ?

A: Earth science is a subject that relates to the study of the earth's surficial process and subsurface...

Q: What causes the surface circulation of water throughout the oceans?

A: The currents that are formed on the surface of the oceans by the influence of the energy from the Su...

Q: which one is earth science, life science and physical science ?

A: Earth science is the study of the Earth and the various processes that are going on in the Earth sys...

Q: How long would it take for a tsunami to travel from the Aleutian Islands (west of Alaska) to the Nor...

A: Tsunami are the large powerful waves ,  generated due to tectonic movements in deep oceanic crust . ...

Q: Suppose our supply of rare earth metals were cut off tomorrow. How would that affect our life?  Prov...

A: Any member of the group of chemical elements that consists of three elements in Group 3 and the firs...

Q: Thinking Critically Though they move across the deepest ocean basins, seiches and tsunami are referr...

A: Shallow water waves are the waves in which depth lower than 120 of the wavelength.  Deepwater waves ...

Q: The best description of this sampling technique is? Stratified Random Systematic

A: In geography a map is made using a scale, without a scale a map cannot be made as it will be difficu...

Q: Which feature is part of a sustainable society?a. recycling and compostingb. use of mass transit in ...

A: Sustainable society is the one which can live in the boundary of ecological limit. in this society w...

Q: What are some features common to erosional coasts?

A: Many physical processes shape the earth's surface. The processes are tectonic activities, erosion, a...