What percentage of the total mass of the sun will be converted into energy over its ten-billion-year lifetime?   a. 0.07%   b. 7%   c. 17%   d. 70%   e. 97

Q: Sinkholes can be found in different parts of the Earth's crust with different sizes. Suggest 5 possi...

A: Sinkholes are geomorphic features formed by the dissolution of rocks like limestone, dolomite, gypsu...

Q: How does the fossil record of flowering plants reveal climatic change during Paleogene time?

A: The geological time has been divided into multiple parts. One such is the Paleogene, a period that s...

Q: Who personally inspected and classified the spectra of over a quarter of a million stars?   a. E...

A: The universe is all the time and space that includes all the galaxies, stars, planets, and all forms...

Q: Why are hydrochlorofluorocarbons (HCFCs) preffered over chlorofluorocarbons (CFCs)?

A: The atmosphere is the mixture of gases, water vapor, dust particles, etc. that are surrounding the e...

Q: Calculating the Hubble Constant (Ho) 1. Using the equations given in the introduction, find the dist...

A: 1. The formula for distance is given by  d=105+(m-M)5Given absolute magnitude= M= -21The values of a...

Q: Would you say the “memory” of the sediments is long or short (in geologic time)?

A: We can say the memory of sediments in geologic time is long because we can say a lot about earth's h...

Q: Rank the following reservoirs of the hydrologic cycle according to residence time (shortest to longe...

A: The water cycle describes the presence and movement of water on, in, and on land.  Earth's water is ...

Q: Discuss how species interactions shape biological communities.

A:        Ecological Communities are groups of interacting species living in a geographical area. A com...

Q: What about wind waves and the Coriolis effect? Do windwaves turn right in the Northern Hemisphere as...

A: Coriolis effect can be described as bending in the path of any object moving from pole to equator an...

Q: Take the other two pancakes or modeling clay layers and put the cut edge just on top of the other cu...

A: Plate tectonics theory notes that underneath the earth's lithosphere, slabs known as plates float an...

Q: Is there a need for a country near the equator to observe daylight saving time? Explain.

A: Daylight time saving occurs in summer season and is a practice of advancing the clocks by one hour. ...

Q: List several goals or aspects of sustainability.

A: The environment encompasses all the living and non-living organisms in an area. This term is often a...

Q: Contrast the patterns of occurrence of sediments and sedimentary structures in the following three k...

A: Sediments are fine materials formed by the breakdown, weathering, and erosion of pre-existing rocks....

Q: How did the reef builders change through the Paleozoic times (early, middle, late Paleozoic)? What i...

A: Corals were originrated during the late cambrian preiod and they started as simple, solitary organis...

Q: Based on the same figure in SQ.2(a), name two types of metamorphism that can possibly occur in this ...

A: The tectonic setting in the given figure is a subduction zone. The oceanic crust being denser and he...

Q: Why is water a polar molecule? What properties of water derive from its polar nature?

A: Earth is the third planet in the solar system. And it is the only planet in the solar system known s...

Q: All are causes of animal and plant extinction except  A. Overgazing  B. Experiment for research  C. ...

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any ...

Q: Please help the options are “air masses”, “storms” and “winds”

A: The air is a mixture of several types of gases in definite proportions. It is necessary for living o...

Q: List the mass extinction events that have occurred onEarth, and describe the hypotheses that explain...

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

Q: (i) Describe Earth’s current magnetic field.(ii) The diagram represents the magnetic anomalies of th...

A:   Our planet Earth has its own magnetic field. A magnetic field is a magnetic effect on an electrica...

Q: Light emitted from a hot dense object will produce   a. a continuous spectrum.   b. an emiss...

A: The range of wavelength of light that is emitted or absorbed by any object is called a spectrum. If ...

Q: Describe the sequence of life-threatening events that occur when a 10 km (6 mi) diameter asteroid sl...

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

Q: Match the following terms about the features of caves with their descriptions. 1. Forms when w...

A: Cavern highlights are generally shaped by sluggish water that has a high calcium carbonate content. ...

Q: 40 N- 40 N Anatolian Phate Eplcenter Crete Arablan Plate 35 N 35 N Mediterranean Sea Plate Y 400 km ...

A: The solid rocky outer shell is called the lithosphere. The lithosphere consists of the crust and the...

Q: Why do many northern European countries incinerate much of their waste?

A: As the population grows, the amount of space available for creation of new landfills becomes a chall...

Q: what is environmental risk ?

A: The environment encompasses all the living and non-living organisms in an area. This term is often a...

Q: The sun produces   a. no spectrum.   b. an emission spectrum.   c. an absorption spectru...

A: Sun act like a black body and produces a continuous spectrum. Therefore the answer is a continuous s...

Q: The Satellite Instantaneous Field of View (IFOV) has the following attributes: Select one: O a. The ...

A: Remote sensing is an art and science of obtaining information from an object which is not in contact...

Q: Which of the following best describes the main driving force behind landscape evolution? Group of a...

A: Landscape evolution is defined as the geomorphic changes undergone by a piece of land with due cours...

Q: Activities that reduce plastic pollution of the oceans.

A: The earth is a terrestrial planet, which means it has a rocky surface. This rocky surface is made up...

Q: What element makes up most of the detectable mass in the universe?

A: The universe is a tremendous and entrancing spot. At the point when stargazers consider what it's ma...

Q: As a star moves away from us, the light from it would have its wavelengths   a. shortened.   ...

A: If a star is moving toward or away from us, the wavelength of light in its spectrum appears reduced ...

Q: Light passing through a cool, thin gas will produce   a. a continuous spectrum.   b. an emis...

A: Light can show a certain color because of its specific wavelength based on the amount of energy it p...

Q: Study the graph, which shows the combined effects of various factors on biological diversity in 12 d...

A: The above graph shows combined-effects of the various factors of biological-diversity in various ter...

Q: What is an ion and how is it formed?

A: Atoms are the building block or the basic unit of any matter. Every solid, liquid, gas, or plasma is...

Q: How did the 1969 Santa Barbara oil spill help pass environmental legislation?

A: The oil spill of 1969 in Santa Barbara was the biggest explosion of the oil spill that took place in...

Q: Why are plastics difficult to recycle?

A: Plastics are manufactured from plastic resign. Several chemical additives are added to the plastics ...

Q: Explain how the factors below affect soil formation i) Topography ii) Climate iii) Organisms

A: Soil is made up of organic matter, minerals, gases, liquids, and organisms, all of which work togeth...

Q: Why are most oceanic trenches found in the Pacific Ocean?

A: Ocean trenches are long, slender sorrows on the ocean bottom. These abysses are the most profound pi...

Q: Is there a proven link between global warming and the apparent growing intensity of Atlantic hurrica...

A:       Hurricanes are the regional tropical cyclones of the Atlantic and the Pacific Ocean. These are...

Q: 2. Navigate down the canyon along the Bright Angel Trail (in Google Earth) from an eye altitude of a...

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

Q: Why do deep-focus earthquakes occur along subduction zones?

A: The subduction zone can be explained as a zone located in the convergent tectonic plate margin when ...

Q: From the following figure, choose the CORRECT multiple reflection events encountered in seismic expl...

A: When a seismic wave travels through the subsurface, it encounters certain geological boundaries. It ...

Q: Explain why the soil of arctic tundra contains a large amountof carbon

A: The soil in the Arctic region is to a great extent permafrost or soil that stays frozen all year, le...

Q: 1 help

A: Water is essential part of our living . With the increase in wastage water and rapid increase in wat...

Q: The ______________________ is responsible for binding the electrons to the nucleus.   a. gravita...

A: Gravitational redshift is the phenomena of em waves (electromagnetic) passing out and losing energy,...

Q: What are brownfields? Why are they both important and difficult to clean up?

A: The land which was previously used in an urban area for any purpose of development but currently not...

Q: How much longer can earth support life?

A: approximately in 300 million years earth is going to be inhospitable for lifestyle. then the terrest...

Q: What is environmental resistance? What sort of a growth curve would you expect from an organism plac...

A: Humidity is basically the convergence of water fume present noticeable all around, while relative da...

Q: Light passing through a cool, low-density gas will produce what type of spectrum?   a. absorptio...

A: Light passing through a cool, low-density gas will produce an absorption spectrum. Light passing thr...