Answer:
The lake disappeared during Titan's summer, when the amount of energy being transferred into the lake was higher than at other times, so the lake must have evaporated, not frozen. ... Students figure out: It had been summer since 2002, but the lake didn't evaporate until 2007.
Explanation:
Titan is the only moon in our solar system with a dense atmosphere, which supports an Earth-like cycle of ethane and methane clouds, rain, and liquid that flows into lakes and seas. Examining data from NASA’s Cassini mission, a team led by Shannon MacKenzie of the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, observed three instances where what appeared to be shallow lakes disappeared between winter and summer — a span of about seven years — in the moon’s northern regions.
“It’s the first time we’ve actually seen a lake on Titan’s surface disappear completely,” said MacKenzie, whose results appear today in Nature Astronomy. “This tells us that if evaporation is happening as slowly as models predict, then the surface must also be porous enough in these areas for liquid to drain into it for the lakes to disappear.”
Understanding the timescales for Titan’s lakes is important for modeling local weather, climate and sediment processing. Titan is the only planetary body in our solar system other than Earth known to have stable liquid on its surface. “These observations give us new insight into the behavior of liquids on Titan’s surface, and how long it takes some of these processes to occur,” MacKenzie said.
MacKenzie added that these processes likely occur at a similar rate across that region on Titan, although it would be harder to observe in the deeper northern lakes. Another Nature Astronomy paper published today, led by Marco Mastrogiuseppe of Caltech in Pasadena, California, reveals that most of the small, liquid lakes in Titan’s northern hemisphere are surprisingly deep, perched atop hills and filled mainly with methane — the first confirmation of just how deep some of the moon’s lakes are (more than 300 feet, or 100 meters) and their composition.
The abundant complex organic material accessible on and just below Titan’s surface makes it an ideal destination for studying the conditions necessary for the habitability of an extraterrestrial environment and the kinds of chemical interactions that occurred before life developed on Earth. A goal of the proposed Dragonfly mission — a rotorcraft-lander concept vying to become NASA’s next New Frontiers mission — would be to sample areas rich with the materials left by liquids that evaporated or seeped into the surface.
Cassini arrived in the Saturn system in 2004 and ended its mission in 2017 by deliberately diving into Saturn’s atmosphere. The spacecraft mapped more than 620,000 square miles (1.6 million square kilometers) of liquid lakes and seas on Titan’s surface. It did the work with the radar instrument, which sent out radio waves and collected a return signal (or echo) that gave information about the terrain and the liquid bodies’ depth and composition, and with two imaging systems that can penetrate the moon’s thick atmospheric haze.
The Cassini-Huygens mission is a cooperative project of NASA, ESA (European Space Agency) and the Italian Space Agency. NASA’s Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the mission for NASA’s Science Mission Directorate. JPL designed, developed and assembled the Cassini orbiter. The radar instrument was built by JPL and the Italian Space Agency, working with team members from the United States and several European countries.
i hope this helps i think
I’ll give points + brainalist (:
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Explanation:
you just have to sit there and basically say why the smog did what it did to the dinos, you need to sit there and explain how it hurt there bodys minds ect... its just like smoke to us it would make us choke from breathing it in and cause the black lung stuff.
In order for an object to sink, its density must ___________ 1g/ml.
a.
be less than
c.
be equal to
b.
be greater than
d.
be double
Please select the best answer from the choices provided
A
B
C
D
Answer:
B
Explanation:
If its greater than it will have a better chance at sinking because of the mass
What are the four classes of nutrients?
Answer:
carbohydrates
lipids
proteins
water
Which greenhouse gas is produced by commercial refrigeration and air conditioning systems?
carbon dioxide
fluorinated gas
nitrous oxide
methane
answer:
-- b), fluorinated gas
hope this helps.
The greenhouse gas that is produced by commercial refrigeration and air conditioning systems is fluorinated gas.
WHAT IS GREENHOUSE GAS?A greenhouse gas is a gas that has the ability to trap and release heat energy into the atmosphere.
Greenhouse gases are the major causes of global warming, which is the rise in the global atmospheric temperature.
Examples of greenhouse gases are carbon dioxide, methane, fluorinated gas etc. Therefore, greenhouse gas that is produced by commercial refrigeration and air conditioning systems is fluorinated gas.
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Why is it necessary for oceanographers to analyze river pollution levels?
5) It is said that the hottest layer of the earth
is the core (outer core and the inner core)
and that is where metal is found. Why
can't metal melt in the core?
Answer:
please give me brainlist and follow
Explanation:
The churning metal of the outer core creates and sustains Earth's magnetic field. The hottest part of the core is actually the Bullen discontinuity, where temperatures reach 6,000° Celsius (10,800° Fahrenheit)—as hot as the surface of the sun. The inner core is a hot, dense ball of (mostly) iron.
7. What is the correct order of the levels of organization in the human body from
the simplest to the most complex?
Answer:
The major levels of organization in the body, from the simplest to the most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism.
All living and non-living things are made of one or more unique substances called elements, the smallest unit of which is the atom, (for example, the element oxygen (O) is made of O atoms, carbon (C) is made of C atoms and hydrogen (H) is made of H atoms. Atoms combine to form molecules.
All living structures are made of cells, which are made of many different molecules. Cells are the smallest independent living thing in the human body. The body is made of many different cell types, each with a particular function, (for example muscle cells contract to move something, and red blood cells carry oxygen). All human cells are made of a cell membrane (thin outer layer) that encloses a jelly-like cellular fluid containing tiny organ-like structures called organelles.
A tissue is a group of similar cells that work together to perform a specific function. There are four main tissue types in humans (muscular, epithelial, nervous and connective). An organ is an identifiable structure of the body composed of two or more tissues types (for example, the stomach contains muscular tissue made of muscle cells, which allows it to change its shape, epithelial tissue which lines both the inner and outer surface of the
stomach, nervous tissue which sends and receives signals to and from the stomach and the central nervous system, and connective tissue which binds everything together).
Organs often perform a specific physiological function (for example, the stomach helps digest food). An organ system is a group of organs that work together to perform a specific function (for example, the stomach, small and large intestines are all organs of the digestive system, that work together to digest foodstuff, move nutrients into the blood and get rid of waste). The most complex level of organization, the human organism is composed of many organ systems that work together to perform the functions of an independent individual.
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In diagrams a full moon is represent with a
A. A white circle
B. A completely shaded circle
Answer:
A
Explanation:
cause you can see the entire moon at night(if there are no clouds present)
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Which term is associated with asexual reproduction but not sexual reproduction?
A. fertilization
B. conjugation
C. Fission
Answer:
B
Explanation:
Im having trouble with this
Using the figure, match the following
The muscle fiber (cell) is indicated by
Label A
Label B
Label C
Label D
Answer:
Hope it helps
Explanation:
The label A represents mitochondria.
The mitochondria are also called the powerhouse of the cell which converts glucose to energy-rich molecules of ATP.
Label B represents the nucleus.
The nucleus contains the genetic material or DNA, RNA, nucleolus, chromatin fibers, and proteins. It contains the chromosomes which control the hereditary characteristics.
Label C represents the lysosome.
Lysosomes contain digestive juices which break down large cell parts and large molecules and help in intracellular digestion.
Label D represents rough endoplasmic reticulum having ribosomes.
The rough endoplasmic reticulum provides a surface for protein synthesis. It is also used to transport cellular contents from one cell to another.
Help pls ;<; /A city lies near a forest. The city leaders decide the forest should be protected. There is a stream running through the forest, too. Which action would preservationists and conservationists agree on? A. Some fish can be caught in the stream. B. Fighting forest fires should be allowed. C. The forest and stream should be protected. D. Hunting shouldn’t be allowed in the forest. E. People should be allowed to camp in the forest.
Answer: fighting forest fires should be allowed
Explanation:
Answer: C: The forest and stream should be protected.
Explanation:
Does the carbon cycle in this diagram appear to be in balance or out of balance? Use specific evidence from the diagram to support your answer. This diagram shows gigatons of carbon moving to and from the atmosphere each year.
This diagram shows gigatons of carbon moving to and from the atmosphere each year and yes the diagram is valences.
Which factor is responsible for fixation?Cutting down large areas of forests Plants are responsible for fixation of atmospheric carbon dioxide. If the number of plants is reduced, the amount of carbon dioxide moved from the atmosphere to vegetation will also decrease.
The biogeochemical cycle in which carbon is exchanged between the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth is known as the carbon cycle.
According to the question, emitted amount of carbon is 480 gigatons but the amount of carbon in the environment is approx 190 gigatons, so the remaining amount of the carbon was stoored by the oceans and other water reservoir, which may be get clear throug the attached diagram.
Therefore, This diagram shows gigatons of carbon moving to and from the atmosphere each year and yes the diagram is valences.
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Why is it important that gametes be haploid?
I GOT YOU SO EASY
Answer:because when the sperm and the egg fuse together the cell will have 46 chromosomes.
Answer:
It is important that chromosomes are haploids because when the sperm and the egg fuse together the cell will have 46 chromosomes. polar bodies are haploid cells produced during meiosis which are smaller in size compared to the gamete and will disintegrate
Explanation:
Hope this helped Mark BRAINLIEST!!!
person who studies inscets
Answer:
An entomologist
Explanation:
What do we call the area of Earth,
from the top of the highest mountain
to the bottom of the ocean, in which
all life exists?
A. atmosphere
B. life bubble
C. biosphere
Bird species from temperate regions must cope with relatively short breeding seasons. A study examined the relationship between blood testosterone level (ng/ml) and the duration of the egg-laying period (months) in temperate bird species. The scatterplot below displays this relationship, after taking the logarithm of each variable. A plausible value for the correlation between the logarithm of egg-laying duration and the logarithm of testosterone level is
Answer:
The answer is "-0.4".
Explanation:
In that situation, the value of the possible correlations between the egg-laying logarithm as well as the testosterone level logarithm is equal to 4 It value is equal to the percentage 4=-0.4.
human disruption of the carbon cycle has been implicated in..?
Answer:
D. Climate change
Explanation:
The carbon cycle is disrupted by several activities of man which includes burning if fossil fuels anong others. These leads to accumulation of huge amounts of carbon dioxide in the atmosphere which leads to global warming. The resultant effects of global warming is what one of the major cause of climate change.
Therefore, human disruption of the carbon cycle can be said to have been implicated in climate change.
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Answer:
An outbreak of a disease that infects squirrels in the park.
Explanation:
All the other answer choices would increase the population of squirrels. For the first option, more trees = more habitats = more squirrels to live in. For the second option, less hawks = less predators = more squirrels that will survive. For the third option, heavy rain = more acorns = more food for more squirrels.
Only the last option would limit the growth of a population of squirrels since diseases kill organisms in a population.
Give an example of physical evidence used to organize Earth’s history on the geologic time scale.
Answer:
The Earth is 4.6 billion years old. Some examples of events listed on the geologic time scale include the first appearance of plant life on Earth, the first appearance of animals on Earth, the formation of Earth's mountains, and the extinction of the dinosaurs.
Explanation:
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A team of students encountered an unorganism in the field conducting a biodiversity study some students think the organism is a plant or other things organism which question should the students investigate to classify the organism correctly
Answer:
Does the organism perform photosynthesis?
Is your answer
Explanation:
Identify two two layers of earth where selsmic s waves do not travel
A.upper mantle
B.lower mantle
C.outer core
D.inner core
Answer:
Outer and inner core
Hope this helps!
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Answer:
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Explanation:
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UwU
7 DDT is a pesticide that was once widely used to control agricultural pests and
mosquitoes. However, this pesticide caused the eggshells of certain birds, including the
brown pelican, to become fragile and thin. The adults would then accidentally crush the
eggs while trying to incubate them.
What happened to brown pecan populations as a result of DDT use by humans?
A The populations increased much more slowly.
B The populations decreased as fewer eggs survived long enough to hatch.
C The populations remained stable over time.
D The populations increased as pelicans laid more eggs so that more offspring would
survive.
Answer:
The answer is B. The populations decreased as fewer eggs survived long enough to hatch.
Explanation:
Describe how brine pools function
Explanation:
Brine pools are sometimes called sea floor "lakes" because the dense brine does not easily mix with overlying seawater. The high salinity raises the density of the brine, which creates a distinct surface and shoreline for the pool. When submarines dive into brine pools, they float on the brine surface due to the high density
Under certain conditions, it is possible to get more work out of a machine than you put into it.
Please select the best answer from the choices provided
T
F
Answer:
f :)
Explanation:
Chloroplasts require oxygen.
True
Or
False??
Answer:
yes true because The oxygen released by the chloroplasts is the same oxygen you breathe every day.
Explanation:
Why do populations increase and decrease
Explanation:
Populations grow or shrink depending on if they gain people faster than they lose them. or The government needs to tackle the causes and effects of population decline, of decline, the proportion of elderly people is higher than elsewhere, increasing as long as possible, and to identify what provisions they need in order to do so.
The initial velocity of an enzyme catalyzed reaction is determined by:_________.
a. graphically determining 1/2 Vmax.
b. calculating the amount of product formed over time while the amount of product is increasing in a linear manner.
c. calculating the amount of product formed over time from the beginning to the end of the reaction.
d. graphing the absorbances of known concentrations
Answer:
calculating the amount of product formed over time while the amount of product is increasing in a linear manner. ( B )
Explanation:
The initial velocity of an enzyme catalyzed reaction is determined by Calculating the amount of product formed over time while the amount of product is increasing in a linear manner
Initial Velocity of an enzyme is the described in relation to the amount of product produced per unit time at the beginning of a reaction.
The initial velocity of an enzyme reaction is determined by calculating the amount of product over time while it is increasing in a linear manner (Option B).
What is an enzyme?An enzyme is a protein that may act as a biological catalyst for a particular chemical reaction.
Enzymes work by speeding up the velocity of a given chemical reaction.The initial velocity of an enzyme can be calculated by determining the amount of product of the chemical reaction.In conclusion, the initial velocity of an enzyme reaction is determined by calculating the amount of product over time while it is increasing in a linear manner (Option B).
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