What is primarily responsible for the observed decrease in atmospheric oxygen (O2) over the past 30 years? Group of answer choices decay wildfires burning fossil fuels respiration volcanoes

Q: Why do the atmospheres of Uranus and Neptune appear blue?

A: Uranus is 7th planet in the solar system and is 3rd largest planet with respect to radius. It is als...

Q: The ozone layer is   a. transparent to ultraviolet radiation.   b. opaque to ultraviolet rad...

A: The Ozone layer or ozone shield s a region in the atmosphere of the earth. This region absorbs solar...

Q: What is the difference between asteroids and comets? Refer to both their orbital and physical charac...

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

Q: 10. Identify one example of natural selection "at work" in the wild? Please see my example for inspi...

A: Natural selection is the process by which organisms adapt or develop certain traits that help them t...

Q: Which of the following planets has its axis of rotation tipped the most?   a. Uranus   b. Ne...

A: The axis is an invisible-line that can be found around when an object-rotates and spins. As each pla...

Q: Follow direction of the image and choose the correct answer

A: A radioactive isotope is the elements that are unstable and they decay to a stable product by emitti...

Q: Can you help me please

A: Moon is the natural satellite of earth which revolve around earth in a specific orbit and time. It i...

Q: Which of the following in Saturn’s rings is produced by the gravitational interaction of Mimas with ...

A: Let us discuss something about Saturn, Saturn: 6th planet from the Sun The 2nd largest in the Solar...

Q: Which hypothesis concerning the formation of the moon makes predictions that best fit the observed l...

A: Firstly, let us discuss something about hypothesis, Hypothesis: a supposition the explanation made...

Q: Iron and nickel drained to the center of Earth, while at the same time, the lighter silicates rose t...

A: Earth is a terrestrial planet, meaning it has a rocky surface that is primary made up of silicate ro...

Q: The spacecraft that intercepted Comet Halley in 1985 and 1986 discovered that the nucleus of Comet H...

A: Halley's comet is a comet that appears every 75-76 years. It is visible to the naked eye and the per...

Q: Hazard is _________. It becomes hazard when ________________. The different types of haazards are __...

A: The natural environment or the natural world includes all living and non-living things that occur na...

Q: What are the inferred pressure and interior temperature at the boundary between Earth's outer core a...

A: Earth is the third planet in the solar system. It has a rocky surface primarily made up of silicate ...

Q: What is the process of formation of wind energy by virtue of climatic conditions at any local and gl...

A: Wind energy is used to generate electricity. In the energy generation process, high speed wind is us...

Q: Detailed photographs of a few asteroids by spacecraft show that they look   a. like lava rocks w...

A: Asteroids are rocky bodies that orbit the sun but are too small to be classified as planets. Planeto...

Q: Slogan about composting at the same time saving our planet.

A: Composting is the supply of the plant with the nutrients necessary for its growth, production and qu...

Q: Earth Science Question

A: The third planet of the solar system is our earth which rotates on its axis and revolves around the ...

Q: A student collected the following data: Average Daily Temperature (°C) Phase of Moon New moon Sunset...

A: The solar system is the gravitationally bound system around the sun. There are 8 planets, their moon...

Q: Earth possesses few visible craters and the moon possesses many. This is because   a. Earth form...

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

Q: What are the differences between the Kuiper belt of objects and the Oort cloud?

A: The solar system is a gravitationally bound system around the sun. It has 8 planets, their moons, as...

Q: Instructions: From these five factors affecting climate, choose one particular factor you agree that...

A: Changes in weather patterns that impact the atmosphere on a regional & global scale are referred...

Q: We can be sure the particles in the rings of Neptune are very small because   a. the rings are f...

A: All Jovian planets are composed of gaseous materials and dust particles. All these planets have a ri...

Q: The presence of breccias among the lunar rock samples shows that   a. volcanism did not occur on...

A: These are the rocks of the moon and often called moon rocks. These igneous rocks are quite expensive...

Q: How is plate tectonics related to continental drift and seafloor spreading?

A: The Earth consists of a solid outer plate called the lithosphere and is about hundred kilometers thi...

Q: Instructions: From these five factors affecting climate, choose one particular factor you agree that...

A: In my area the climate is affected by the latitude and presence of water body near it. As I live in ...

Q: What percent of Earth's total global water is freshwater? Options: 2.5%, 10%, 50%

A: Earth is a terrestrial planet, meaning it has a solid rocky surface. The Earth's surface is primaril...

Q: Streak refers to what with respect to minerals?     The color of the mineral in powdered form ...

A: Minerals are naturally occurring solid chemical compounds that have a fairly defined chemical compos...

Q: The flow patterns found on the surface of Mars suggest   a. that Mars is a water-rich world. ...

A: Mars is the 4th planet from the sun and is often called as red planet. the iron oxide on the surface...

Q: Follow direction of the image and choose the correct answer

A: Relative dating is finding age of rock relative to other event or fossils or structure present near ...

Q: Studies show that the short-period comets cannot originate at a distance thousands of astronomical u...

A: The universe got formed around 13.8 billion years ago. It consists of several numbers of celestial b...

Q: Earth Science Question

A: The occurrence of day and night is a cyclic process that continues in a never-ending loop. The earth...

Q: With the help of a globe or map, name specific countries where the following biomes can be found. a....

A: The tundra biome is one of the world's largest biomes and is characterized by a high level of rainfa...

Q: does the equator receive direct 90° insolation each day throughout the year explain? 

A: The Earth is enclosed by a blanket of gases called the atmosphere. The atmosphere serves as a protec...

Q: The discovery of Charon around Pluto enabled astronomers to determine Pluto’s   a. chemical comp...

A: During the discovery of Charon in 1978, it was thought that Charon is a moon of Pluto. But, it later...

Q: The Widmanstätten patterns found in some meteorites show that the material   a. cooled very slow...

A: Option a is the correct answer.

Q: The interior of Saturn is mostly liquid. As a result, the planet’s rapid rotation produces   a. ...

A: The 6th planet from the sun is Saturn. It is the solar system's second-largest planet.  Saturn's rin...

Q: Low-density and cold dust disks have been found around many stars. These disks are believed to be re...

A: Proto planetary disks known as low density and cold dust disks. They have young stars in the centre....

Q: 1. How do mountain ranges form according to plate tectonics?, 2. Why do these plate tectonic process...

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

Q: Why are the volcanoes on Mars so much larger and higher than the volcanoes on Earth?

A: The solar system consists of several planets. The earth is the third while the Mars is the fourth pl...

Q: What characteristics make Earth’s surface unique among the terrestrial planets?

A: Our solar system which got formed around 4.6 billion years ago has two types of planets-terrestrial ...

Q: Where is the water that used to flow on the Martian surface now?

A: The solar system is the gravitationally bound system around the sun. It has 8 planets, moons revolvi...

Q: Which contact "is an erosional break between two sets of beds in which the unconformity shows relief...

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

Q: Differentiate minimum from intensive tillage?

A: Agriculture is the art and science of the cultivation of the soil. Several old practices, scientific...

Q: Explain in detail the mechanisms by which soil organic C reduces soil erosion.

A: Firstly, let us discuss something about soil, Soils: Complex mixtures of minerals, water, air, org...

Q: The density of Comet Halley was found to be about 0.2 g/cm 3. This implies that Comet Halley   a....

A: Comet Halley, also known as 1P/Halley, is a short-period comet that can be seen from Earth every 75–...

Q: The atmosphere of Venus contains much more carbon dioxide than the atmosphere of Earth. This differe...

A: Venus is the second planet from the Sun and Earth is the third planet from the Sun in distance. The ...

Q: The belt-zone circulation on Saturn is less visible than it is on Jupiter because the   a. belts...

A: The solar system is a gravitationally bound system around the sun. It has 8 planets, their moons, as...

Q: Jupiter’s Great Red Spot probably has an extended life because it   a. originates from deep with...

A: The answer will be option a.

Q: Explain in detail the mechanisms by which soil organic C reduces soil erosion.?

A: Soil erosion occurs as topsoil is removed, causing the soil to degrade. Several factors, such as win...

Q: A student collected the following data: Average Daily Temperature (°C) Phase of Moon New moon Sunset...

A: The solar system is the gravitationally bound system around the sun. There are 8 planets, their moon...