The statements that accurately describe the views of scientists about dark matter are;
Scientists have hypotheses about dark matter but need more data to test ideas.New data could cause scientist to change their hypotheses about dark matter.Scientists do not really understand what dark matter is but they have ideas about the things it is not.
For instance, scientists know that dark matter is not bright like our planet and the stars. This can be deduced from its name, "dark matter."
Scientists also believe that dark matter is not composed of antimatter. If it were, they would be able to detect this through the emission of gamma rays.
Scientists have other speculations but if new data comes with convincing proofs, they may have to change their present hypotheses.
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Answer:
New data could cause scientists to change their hypotheses about dark matter.
Scientists have hypotheses about dark matter but need more data to test their ideas.
In a sample of double stranded dna if 27% of the nitrogenous bases are thymine what percentage of nitrogenous bases are cytosine
Answer:
23%
Explanation:
According to Chargaff's law A = T and G = C
T = 27%
A = 27%
27 + 27 = 54
100 - 54 = 46
46/2= 23
So 23%
List 5 pairs of organisms that rely on each other to survive the Everglades ecosystem.
(Animal)
Answer:
American Alligator.
Banded Water Snake. ...
White-Tailed Deer. ...
Dolphin. ...
Florida Panther. ...
Enzymes work fine at any range of temperatures.
A. True
B. False
Answer:
False
Explanation:
Enzymes work best within specific temperature and pH ranges, and sub-optimal conditions can cause an enzyme to lose its ability to bind to a substrate. However, extreme high temperatures can cause an enzyme to lose its shape (denature) and stop working.
True or false
processing maintains quality control .
Answer:
True
(I am not 100% sure because the question is very short with no context, but I believe it to be true)
Why does our sun appear to be bigger than all of the other stars?
A.The sun is much hotter than other stars.
B.The sun is the closest star to the earth.
C.The sun's color is yellow which is the brightest, most visible star.
D.As light travels from the other stars, it gets reflected.
please fill out! desperately need very soon!!!!!!!!!!!!!!!!!!!
Answer:
nxm ZQM
Explanation:
XM AM
true or false
Photosynthesis is part of an oak tree's niche.
Answer:
True, veryyyyy true
:))
WILL GIVE BRAINLIEST TO BEST ANSWER NO LINKS Select the correct answer.
In 2002, Colorado was suffering from extreme drought. Which technology will help Colorado reduce the effects of future droughts?
A.
building sea walls
B.
building levees
C.
building dams
D.
building storm shelters
Answer:
Building dams is the technology that will help Colorado reduce the effects of future droughts.
Explanation:
i dont know why people are putting links up insted of awnsers. Have a nice day :)
Answer:
C. Building dams
Explanation:
dams can store and reserve water for future use (resevoirs)
How are animals in the polar dying connected to climate change?
help
Answer: well, ce dependent species such as narwhals, polar bears, and walruses are at increasing risk with shrinking sea ice cover. ... As the Arctic loses snow and ice, bare rock and water absorb more and more of the sun's energy, making it even warmer. This is called the albedo effect.
Explanation:
How does a human being get from one cell to one million cells?
Answer:
one cell??? cellular reproduction should be your answer I believe.
Explanation:
The products in our society that contribute the most waste are those that are _____.
Answer:
disposable
Explanation:
Biodegradable products do not really present any problems because they can decompose on their own, thus they do not create any pollution. Aluminum is not as dangerous to the environment as plastics, for example.
Name 2 chordates that are not vertebrates.
Answer:
The other two subphyla are invertebrate chordates that lack a backbone. Members of the subphylum Urochordata are tunicates (also called sea squirts). Members of the subphylum Cephalochordata are lancelets. Both tunicates and lancelets are small and primitive.
Explanation:
Not really an explanation for this one.
Why are archaea in a different domain from bacteria?
A. They are multicellular, but bacteria are unicellular.
B. They are thought to have separate paths of evolutionary
development
C. They are able to perform endosymbiosis, but bacteria are not.
D. They have no similar characteristics.
Answer:B
Explanation:
Archaea is in a different domain from bacteria because they are thought to have separate paths of evolutionary development. Therefore, the correct statement is option B.
What are the differences between archaea and bacteria domains?Archaea and bacteria are both prokaryotic organisms, but archaea are more closely related to eukaryotes than bacteria. Archaea have unique lipid membrane and cell wall components that are different in composition than those found in bacteria.
These differences suggest that archaea and bacteria evolved to have separate paths of evolutionary development early in the history of life on Earth and then classified into Archaea and Bacteria domains.
Based on the phylogenetic tree constructed by researchers, the tree has classified life into three domains which are Archaea, Bacteria, and Eukarya These domains are based on their fundamental genetic and biochemical differences.
Therefore, archaea and bacteria are in a different domain because they followed separate paths of evolutionary development.
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What is the relative humidity if the dry-bulb temperature is 26°C and the wet-bulb temperature is 18°C?
Answer:
The amount of moisture air can hold is dependent on its temperature and pressure. The warmer the air the greater the quantity of water vapour it can contain. The air temperature is measured with a normal thermometer this is the Dry-Bulb reading. The actual amount of moisture known as the mixing ratio is measured in grams of water per kilogram of dry air. When air at a certain temperature is saturated it cannot hold any more moisture. The relative humidity of the air is the ratio of the actual amount of moisture in the air to the fully saturated amount.
We can use evaporation to measure the amount of moisture in the air. A wet cloth is placed over the bulb of a thermometer and then air is blown over the cloth causing the water to evaporate. Since evaporation takes up heat, the thermometer will cool to a lower temperature than a thermometer with a dry bulb at the same time and place. The depression in Wet-Bulb temperature allows the humidity to be calculated. If the air is fully saturated (100% relative humidity) the water cannot evaporate, so both the wet and dry bulb temperatures are the same. If the dry and wet bulb temperatures are set to the same value the calculator will show the saturation mixing ratio the amount of water in saturated air at that temperature.
If partly saturated air is cooled without changing its pressure or amount of water vapour, a point is reached when it becomes saturated. The moisture will be given up as dew or ice crystals. This temperature is the Dew Point. This is why condensation will form on a bottle of cold beer, as the air in the vicinity of the bottle is cooled below its dew point. Meteorological reports usually quote the temperature and dew point as well as the station pressure. Moisture content and relative humidity can be calculated from these figures.
The Psychrometer is the name of a device containing both a wet and dry bulb thermometer. This can be a fixed device for meteorology or a handheld sling psychrometer that is often used in air conditioning applications.
Explanation:
The relative humidity if the dry-bulb temperature is 26°C and the wet-bulb temperature is 18°C is 45.1%.
Psychrometer:
It is a device that use to calculate the relative humidity and dew. It has two thermometer, one measures the dry temperature while another measures the wet-temperature.
Given here,
Dry-bulb temperature is 26°C
Wet-bulb temperature is 18°C
The difference between temperature of wet and dry bulb is
= 26 - 18 = 8°C
Now compare the temperature difference to the chart given in the
Therefore, the relative humidity if the dry-bulb temperature is 26°C and the wet-bulb temperature is 18°C is 45.1%.
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where does mold come from?
how does the mammalian body protect itself against infections
The body defends against infection by increasing the number of certain types of white blood cells (neutrophils and monocytes), which engulf and destroy invading microorganisms. The increase can occur within several hours, largely because white blood cells are released from the bone marrow, where they are made.
Can you tell me if my guppys are pregnet for sure to prepare es
Answer: those guppies are definitely pregananant
All the populations living in one place form a ?
Answer:
A community is all the populations in an area. The terms Population and Community are used in ecology to describe a group of different species inhabiting the same geographical space at a particular time. These diverse organisms stay together because of the need of food.
Explanation: hope this helps
help................
The top left, would be light energy from the sun, while the top of the circle would be living beings. Think about it just like plants that that gain energy from the sun through photosynthesis. Then the bottom of the circle would be nonliving beings, either decomposed plants or animals that bring nutrients to soil, or dead ones that we eat. This cycles through until the energy is rereleased through heat. Therefore the top right would be heat energy, every living thing on earth creates gradual amounts of heat. Imagine going for a run, you'll probably be hotter afterwards right? I know it's not the most scientific answer but its 100% right.
Hope this helps!
PLZ HELP ME I WILL GIVE YOU 30 POINTS
When colorblind women married a male with normal vision, all their daughters have normal vision and all their sons are colorblind. This is an example of which type of inheritance.
Answer:
X-linked recessive
Explanation:
The trait is a sex-linked trait because the daughters are not colorblind, but the sons are. We know this its recessive because the daughters have inherited the mother's X chromosome that has the colourblindness trait, but are not colorblind because the father's X does not have the colourblindness trait. The sons are colourblind because they inherited the X from their mother with the colourblindnese trait and a Y from their father. The colourblindness trait or normal vision trait is not carried on the Y, so the mother's X chromosome's trait is expressed.
Sorry if it's confusing i tried my best to explain it
What fossil is evidence that animals moved from living in the water to dry land? If u could help thanks!
Answer:
Tiktaalik roseae
Explanation:
The discovery of the fossil, Tiktaalik roseae on a Canadian island gives credence to the fact that animals moved from living in water to living on dry land. This fish which has feature of land animals such as a neck, skull, and ribs is believed to have lived some 375 million years ago. It also has features of fish such as the fins and scales.
The discovery of this fossil is important to scientists because it confirmed their believe that there should be an organism that would prove that life transitioned from water to land. The fossil was discovered in the year 2004.
Which of the following best describes physical science
Answer:
Do you have a list of answer options?
Explanation:
Answer: b. The study of matter and energy
Explanation:I got it right on the test
Which describes the habitat of a frog?
color for camouflage
prey for snakes
eats insects
marshes and ponds
Marshes and ponds describe the habitat of a frog. So, the correct option is D.
What is Habitat?An area or place where an organism or a collection of organisms naturally lives and thrives is known as a habitat. It includes all the physical, biological and environmental elements necessary for growth and reproduction in a given place. A habitat can be any form of ecosystem, including a forest, desert, ocean, swamp, or dryland.
Temperature, precipitation, soil, vegetation, and other elements that are specific to each ecosystem affect what types of organisms can survive there. Other important elements of a habitat are access to food, water and shelter. Habitat theory is important to ecology and conservation biology.
Therefore, the correct option is D.
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PLEASE HELP WILL MARK BRAINLIST The group of animals (a pod of orcas) shown below is an example of What level of organization? Community Population Ecosystems Individual
Answer:
The answer is likely population or community
Explanation:
the reason that it is not an ecosystem is because an ecosystem is more than just than group of animals itself it also includes the water and things growing underneath it. The reason that it is not an individual is because there is more than one there (a group).
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did you get the answer
If the carrot population increased, the rabbit population would:
NO LINK ANSWERS
A. increase
B. decrease
C. remain the same
Answer:
The rabbit population would remain the same as the increase in number of carrots doesn't determine / effect the population of rabbits.
Hope my answer helps !
Answer:
i believe the answer is c) remain the same
Explanation:
i say this because food availability wouldn't necessarily cause the population to grow (there would need to be an environmental change for this to happen.)
and the population wouldn't decrease because there would be an abundance of food and since starvation is one of the main causes of population decrease (along with over-crowding.)
good luck :)
i hope this helps
**please let me know if this was incorrect**
have a nice day!
8. Which is an example of a medium of communication?
in an office setting
letting people know that Fridays will not have casual dress
a formal speech at a meeting
a person objecting to a point that has been made
Enzymes and substrates are like (choose all that apply)
A. locks with keys
B. molding clay
C. puzzle pieces
Answer:
Hello There!!
Explanation:
The answer is A. locks with keys.
hope this helps,have a great day!!
~Pinky~
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Ur answer is
A. Locks with keys.
thanks hope it helpsOrganisms that are better able to survive are more likely to _______ and pass on their traits.
Answer: make
Explanation: