Opacity is   a. the balance between the pressure and force of gravity inside a star.   b. the force that binds protons and neutrons together to form a nucleus.   c. the force that binds an electron to the nucleus in an atom.   d. a measure of the ease with which photons can pass through a gas.   e. the temperature and density at which a gas will undergo thermonuclear fusion

Q: How is seawater’s salinity expressed?

A: Water bodies on earth occupy the largest area. Oceans are the bigger versions of Seas. The seawater ...

Q: List seven climate “wedges.”

A: Climate is the long-term average of the weather over almost 30 years. The primary factors of climate...

Q: What are the names of the following three well-known constellations? (5) (6). (7).

A: Constellation in astronomy are stars grouped together which appear as a pattern of some picture like...

Q: Why is it difficult for us to make lifestyle changes based on those predictions today?

A: Humans have a vast imagination and thinking capacity, which makes them think ‘how would be our futur...

Q: Other than petroleum and natural gas, what is the most valuable material taken from marine sediments...

A: Marine sediments are a sedimentary loads that are placed on the ocean surface. They are originated f...

Q: Describe three kinds of relationships between two bodies of rock that indicate which of the two bodi...

A: Rock bodies are large scale rock which are present in a region which may be of any kind that is igne...

Q: Discuss the two ways of fixation of the nitrogen gas.

A: The two ways of nitrogen fixation include: Physical  Biological The physical nitrogen fixation is ...

Q: Reefs are commonly porous structures that serve as traps for petroleum. If you wanted to drill for o...

A: A Reef is a rock aggregate that lies above the surface of the ocean. It is often under the action of...

Q: 1. Explain what weather is and it's important to human existence.

A: Weather is a natural condition of the atmosphere surrounding us. The local weather is the state of t...

Q: Answer (i) and (ii)

A: Climate is the long-term average of the weather over almost 30 years. The primary factors of climate...

Q: Which U.S. states have the most shark-bite fatalities? Which shark species are killing the most peop...

A: Animals on earth are dependent on the environment for food and the animals who are dependent on othe...

Q: Please answer the question in the photo

A: Geologic structures are typically the consequence of the amazing structural powers that happen insid...

Q: How and when did the Earth come to be?

A: The model formation of Earth came from the Nebular hypothesis.  Shortly after the big bang, a large ...

Q: Help

A: Velocity of an object is the rate of change of its position in a time taken. it is a vector quantity...

Q: Explain the environment problem 1.Deadly acid rain as a result of fossil fuel combustion, toxic chem...

A: The atmosphere is the mixture of gases, water vapor, particulate matter, etc., around the earth. It ...

Q: Give example for the blanks

A: The Earth is made up of four spheres known as lithosphere, atmosphere, hydrosphere, and biosphere. A...

Q: Describe how we might get by with less water.

A: Earth is a terrestrial planet. This means it has a rocky surface primarily made up of silicate rocks...

Q: Have the particles that make up the atoms of your body existed for nearly all the age of the univers...

A: Atom- An atom is the fundamental and smallest unit of an element. Atoms of the building block of a c...

Q: Intensities being equal, which color of light moves farthest through seawater. Least far?

A: The ocean covers 71% of the earth's surface, thus it receives more amount of sunlight than land. Sun...

Q: What difficulties are presented when duff catches fire?

A:  Duff is a term used for plant, tree litter. These are decaying twigs, branches, and leaves that lie...

Q: What is the land use of Cultivated land?

A: Agriculture is the science or practice of farming. It includes the cultivation of crops on soil or r...

Q: 8. The series of sketches below shows the cross-section of two air masses placed next to each other ...

A: Front- A front is a transition zone where two air masses having different properties converge at a p...

Q: We know that giant stars are larger in diameter than the sun because   a. they are more luminous...

A:   A giant star is a star with considerably bigger span and glow than a fundamental succession (or sm...

Q: What happens when carbon dioxide dissolves in seawater?

A: Sea water covers 71% of the earth's surface. They are a part of the hydrosphere, one of earth's subs...

Q: Name 4 major satellite configurations that constitute the GNSS.

A: Earth is the third planet in the solar system. It has a natural satellite and many artificial satell...

Q: In what ways are pandemics and endemics similar and in what ways/way are they different?

A: Endemic is the term which is used to describe a disease that is prevalent in or restricted to a part...

Q: What can you say about our Planet today? Introduction, Body and Conclusion

A: The planet is an astronomical body possessing its own mass which accounts for the virtue of its grav...

Q: 5. What is the rate of movement along the fault in the past 10,000 years? This can be determined by ...

A: fault are structures which has discontinuity or fracture along a rock mass where a movement have tak...

Q: Which phrase best describes the water cycle? O A. An evaporating process O B. A varying process O C....

A: The water cycle is the movement of water through the lithosphere, atmosphere, biosphere, and hydrosp...

Q: After close examination, you notice an erosional surface between the sandstone and shale, but the be...

A: An unconformity is a surface characterized by a period of erosion and non-deposition. An unconformit...

Q: When you see the TiO2 minerals (Anatase, Rutile, and Brookite) plus the quartz in the tabulation, wh...

A: Bauxite is a sedimentary rock containing heterogeneous minerals which were formed by the residual co...

Q: What characteristics are unique to marine mammals?

A: Marine mammals came into existence before 50 million years, particularly in the Eocene period. The f...

Q: What is a Natural Hazard?

A:  Hazard is a harm or damage done to something or someone or health. The type of hazard which can aff...

Q: Why do extremely cool stars look fainter than you might expect with their luminosities and distances...

A: Firstly, let us discuss something about cool stars and luminosities, Cool stars: The temperature ran...

Q: In your own words, explain the water cycle.

A: There are various processes in the environment that help the environment function better. Few of the...

Q: Thinking Critically What are the signs of overfishing? How does the fishing industry often respond t...

A: Overfishing is the practice of removal or catching a particular species of fish at a faster rate. Th...

Q: True or false: Sustainability is measured by the ability to balance the needs of the three key dimen...

A: Sustainable development defines that human societies must live meet and develop the requirement with...

Q: The most common spectral class of main-sequence stars is   a. A.   b. O.   c. G.   d....

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

Q: Genetic classification uses ____________________ to identify and study different types of rock.

A:  Genetic classification uses the texture and composition of a rock to classify it.

Q: What is an aquifer, and how is it recharged?

A: Aquifers come in two kinds. Some are shaped in the space between permeable materials like sand, rock...

Q: ESC205: Principles of Meteorology Spring 2021 Boundary between the air masses West East cold air (-3...

A: Type of Front approaching- Cold Front Cold Front Air Temperature- 35°F Humidity- Higher Cloudiness- ...

Q: How much more luminous is a 3 solar mass main-sequence star than the sun?

A: Luminosity is a measure of electromagnetic power or radiant power emitted by light emitting object. ...

Q: How about marine aquarium fishes? Are we wrecking reef ecosystems by buying them?

A: Aquarium fishes are the stored types of fishes. These types of fishes are stored with the help of cy...

Q: Can astronomical and meteorological tides interact?

A:   astronomical tides refers to the rise and fall of sea level due to gravitational interactions betw...

Q: you find small fragments of what might be bone. What criteria can you use to distinguish fossil bone...

A: A Fossil is preserved dead remains of pre-existing living organisms or traces of those organisms. Fo...

Q: If you moved three times farther from a star, the star would appear to be how many times fainter? ...

A: Firstly, let us discuss something about the star, Star: It is an astronomical object consisting of a...

Q: 3. Which is NOT true of fossils? a. They indicate that life has a history. b. They are evidences of ...

A: Fossils are the main source of history of ancient. They are used to construct the history.

Q: Compare the source, transition, and floodplain zones of streams and rivers.

A: The Earth is made up of four spheres known as lithosphere, atmosphere, hydrosphere, and biosphere. A...

Q: 2. The 350m wavelength signals from the radio station will be received by the listener as two rays. ...

A: The radio waves are transmitted and received by traveling through our atmosphere. The radio waves ha...

Q: Where do the gamma bursts come from?

A: Gamma ray burst are immense energetic explosion which occur in distance galaxies. They are the brigh...