What is unusual about the changes to the climate system that will occur over the next few centuries? The change in forcing will be faster than previous large changes in Earth history. Humans have never had an influence on the climate system Greenhouse gases have never before been a major forcing on the climate Both B and C are correct. All of the answers are correct.

Q: If the Hadley Cell strengthens in the future as part of global climate change (as climate models sug...

A: In the Hadley cell (Global-scale tropical atmospheric circulation) air rises near the equator and fl...

Q: What are the population doubling times given these annual growth rates: Africa, 2.4%; world, 1.2%?

A: If the N0 , initial population at time, t = 0 is 1 then the N, double of population at time, t is 2....

Q: Explain how population density and distribution  affects the environment

A: Population density is the number of people living per unit area. High population density is associat...

Q: Why are the western United States and Canada much more seismically active than the central and easte...

A: The western United States and western Canada lies along the boundaries of major tectonic plates of l...

Q: Which factors contribute to the motion of ocean gyres? 1) differences in ocean surface temperature...

A: An ocean gyre is a large-scale rotating current system that is comprised of the earth's rotation, co...

Q: 3. The velocity of sound in water is approximately 1,500 m/s. Calculate the depth from sea level to ...

A:   The sound velocity in water medium is about 1,500 m/s. Since the sound echo traveled to the bottom...

Q: What are the major exchangeable cations in soils? How do the relative proportions change between aci...

A: The major exchangeable cations in soils are calcium (Ca2+), magnesium (Mg2+), potassium (K+), sodium...

Q: If gas escapes easily from a magma, will the eruption be peaceful or explosive? If gas cannot escape...

A: Gas gives magmas their explosive character because the gas expands as pressure is reduced. Explosive...

Q: How can arrival times of P and S waves be used to determine distance to the epicenter?

A: P and S waves start from the focus of an earthquake at the same time. Since both are traveling at di...

Q: Explain why it is relatively safe to watch the eruption of a Hawaiian volcano but dangerous to watch...

A: Hawaiian volcano is consisting of largely basaltic magma and the eruption is mostly effusive or non-...

Q: How do I find the contour interval to a topographic map?

A: A contour line is an imaginary line that connects regions of equal elevation on a topographic map. A...

Q: True or False The upper boundary of the vadose zone is synonymous with the elevation of the water ta...

A: The rainwater collected under the ground and stored as a source of freshwater on the earth surface i...

Q: What is gravity

A: In a general sense, gravity is the downward force that keeps us grounded to the Earth's surface or c...

Q: True or False Trees exhibit Red Colour when we interpret True Image RGB?

A:  False. Trees exhibit Green Colour when we interpret True Image RGB.

Q: What is the partial pressure of each gas at 20.00degree C

A: Partial pressure can be calculated using the Ideal Gas Law: P = nRT/V Step 1: Calculate the number o...

Q: Rising seas inundate land, compounding coastal erosion problems outlined above. Calculate how much l...

A: The level of inundation in due to a sea-level rise of 1 foot can be calculated as: Change in Horizon...

Q: In the 2011 Japan earthquake, how large an area of plate moved? What was the maximum slip? What was ...

A: Based on several studies the maximum slip estimated using offshore GPS measurements was somewhere be...

Q: Draw a box model depicting the greenhouse effect and the followingassumptions. Label the energy flux...

A: There are four boxes in the model: Space, Sun, Atmosphere and Surface. The exchange of energy takes ...

Q: True or False:  Sleet is frozen raindrops.

A: Sleet is frozen raindrops. When the layer of freezing air is thicker along the surface. This will le...

Q: Describe the plate tectonic theory?

A: The theory of plate tectonics describes the movements of the earth's lithosphere and the forces resp...

Q: Based on what you learned about Mars and its moons, select all of the correct statements from the fo...

A:   The correct statements are Mars has polar ice caps.   Mars moons are most likely captured.  

Q: Name four ways of creating pyroclastic flows.

A: Pyroclastic flows are one of the most deadly volcanic hazards. They are rapidly moving avalanches fl...

Q: Explain why earthquakes at subduction zones are many times more powerful than spreading-center earth...

A: Spreading-center earthquakes occur at divergent plate margins where the newly formed oceanic crust i...

Q: What causes Earth's climate to change?

A: Throughout Earth's past, the climate has changed on several occasions. The variations have been caus...

Q: What four factors combine to produce lahars?

A:  A lahar is a violent type of volcanic mudflow or debris flow consisting of pyroclastic material, ro...

Q: 2. Rising seas inundate land, compounding coastal erosion problems outlined above. Calculate how muc...

A: The formula for solving this problem can be expressed as: Slope (decimal form) = change in elevation...

Q: True or False Sensor calibration is an important image-processing step?

A: False. Image calibration is an important step in image-processing.  

Q: Need help with number 2, 3, 4, 5, and 6

A: The ecosystem and environment are composed of varieties of life forms or species, which is known as ...

Q: What does the sweeping beam of a light house have in common with a neutron sta Include an explanatio...

A:   The rotating neutron star acts similar to lighthouse. Its beam sweeps in a circle and gives a puls...