Answer:
See below.
Explanation:
A lot of the evidence is related to the fact that light takes time to travel, one of the core principles underlying relativity.
Space itself is expandingLight has characteristics resembling waves, particularly the wavelength (or frequency), which humans see as color. The doppler effect occurs when an object emits light while moving, compressing or stretching the wavelength and altering the color of the light. The light from a galaxy traveling away from us will look "stretched out," or redshifted, to observers on Earth. A moving object's light is either compressed or blueshifted. This nomenclature is based on the fact that blue light has the largest wavelength and red light has the smallest wavelength for visible light. More frequently than not, invisible light like x-rays or radio waves are used to measure the impact of galaxies.
When we do gaze up at the galaxies in the sky, we notice something unsettling: it seems as though everything in the cosmos is frantically attempting to get away from the planet. Everything is far more redshifted than we would anticipate if galaxies were just randomly cruising through space. It is highly improbable that the earth is at the heart of a galaxy explosion that spans the entire universe in the post-Copernican era of science. Instead, we come to the conclusion that space itself is expanding and that the redshift effect would apply everywhere in the cosmos, not only on Earth.
The fact that space is expanding implies that everything was more compacted in the past. Theoretically, there must have been a time in the past when everything was maximum compressed if space has always been increasing.
We can see the remnants of the big bangSince light travels slowly, whenever we gaze into the remote reaches of the cosmos, we are also doing so in the past. By the turn of the 20th century, technology had evolved to the point where humanity had seen everything inside the observable universe. We discovered that a thick plasma "fog" of stuff from the early cosmos surrounds us on all sides in the form of cosmic background radiation. This suggests that the cosmos did not always exist in its current form. Stars and galaxies were created from a sort of primordial soup that subsequently cooled and concentrated.
We can learn some details about the characteristics of the cosmic background radiation, which will help us understand what the early cosmos was like. The evidence suggests that it was extremely hot and that stable stuff, such atoms and molecules, needed some time to form.
It can be used to explain known phenomenaOne of the best tests for a theory is if it can explain a well-known but yet unrecognized phenomena that is unrelated to the original motivation behind its development. Because the first nucleosynthesis only produced the lightest atoms, the big bang hypothesis, for instance, explains why there is a considerably greater abundance of hydrogen and helium in the universe than heavier elements.
Appendix: Problems and open questionsThe fact that both quantum and relativistic physics apply to the big bang is one of the challenges in researching it. These two models don't work well together, as you may be aware. One issue is that gravity is fundamentally weaker than the other forces, making it very hard to measure gravitational effects at the quantum level. As a result, there is no known quantum explanation of gravity.
Dark matter and dark energy are further issues. Simply put, dark matter is "additional" stuff with gravity but no other interactions. Since dark energy is in charge of space's perpetually accelerating expansion, it is much more intimately associated with the big bang idea.
The baryon asymmetry, an issue with antimatter, is another issue. When matter and antimatter come into contact, they completely destroy one another and transform into energy. When the great bang happened and subatomic particles first started to form, there was only a tiny bit more matter than antimatter; as a result, all that was left was matter. The galaxies are currently made up of this small amount of additional stuff. It is not understood why different amounts of matter and antimatter are produced.
However, the big bang theory is by far the most reliable hypothesis for the early universe's development. It is at the leading edge of contemporary science, therefore it's critical to grasp what evidence is actually being given and to accept new discoveries with a grain of salt.
- As viewed from Earth, most stars appear to move across the sky each night because (1) Earth revolves around the Sun (3) (2) Earth rotates on its axis (3) stars orbit around Earth (4) stars revolve around the center of the galaxy Which real motion causes the Sun to
Answer:
stars revolve around the center of the galaxy which really motion causes the saun to
Write the dental formula of a two year old?
Answer:
Dental formula of a 2 year old child is:- 2 1 2 (I C P ) I::-Incisor C::-Canine P::-Pre molar
In Town A, the water has heavy metal Q, and the residents who drink it have long-term kidney damage. In Town B, the water has heavy metal Q and X, and the residents who drink are healthy. What conclusion can be made about the two metals?
The interaction between the metals Q and X makes metal Q less toxic.
What are heavy metals?Heavy metals are those metals that are known to cause some type of damage in the body. Many of the heavy metals have been associated with cancer and organ damage.
If the residents of Town B drink a water that contains heavy metals Q and X and they are healthy, it then means that the interaction between the metals Q and X makes metal Q less toxic.
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Select the correct answer from each drop-down menu.
The images show the wings of two different organisms. The wings of the housefly and the bat are (blank)
indicates that (blank).
Although the wings of bats and houseflies have different anatomical structures, they share the same property. Such systems are known as Analogous systems.
Even though they share the same features, their inner anatomy is different because they no longer share any common ancestry.
Conversely, homologous organs are those that have a common ancestor and an identical interior but have unique characteristic features.
In this instance, the housefly and bat's wings have similar shapes. This implies that they do not share any remarkable ancestors.
What are Homologous organs?
Homologous organs are defined as the organs of different animals that have a similar shape but a variety of functions. The two different animals have a similar shape, yet their organs have different capacities.
It can be inferred from this that the answer is true because it has a homologous organ.
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What five intermolecular forces of attraction are important for tertiary structure?
Explanation:
for protein the force of attractions for tertiary structure are
(i) ionic bonds
(ii) hydrogen bonds
(iii) van der Waals forces and electrostatic bonds
(iv) disulphide linkages
(v) Hydrophobic Interactions.
8. In what year was the concentration of carbon dioxide 355ppm? *
о 2012
2010
о 1980
O 1990
Answer:
slightly after 1990 (when it was 354.19)
What happens during anaphase of the cell cycle?
Chromosomes condense.
Chromosomes line up.
Chromosomes uncoil and the nucleus reappears.
Chromosomes are pulled apart.
During anaphase of the cell cycle the chromosomes are pulled apart. That is option D.
What is cell cycle?Cell cycle can be defined as the stages that brings about the growth and maintenance of a living organism.
The various stages of cell cycle include the anaphase which is when the chromosomes are pulled apart and they move to the opposite side of the cell.
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Question 22 of 25
Which sequence best explains the process of desertification?
A. Lack of plant growth → Loss of topsoil → Nutrient depletion →
Overfarming
B. Nutrient depletion → Lack of plant growth → Overfarming → Loss
of topsoil
C. Overfarming → Lack of plant growth → Loss of topsoil → Nutrient
depletion
D. Overfarming → Nutrient depletion → Lack of plant growth → Loss
of topsoil
SUBMIT
The sequence that best explains the process of desertification is as follows: Overfarming → Nutrient depletion → Lack of plant growth → Loss of topsoil (option D).
What is desertification?Desertification is the process by which a geographic region or vegetation becomes a desert.
Prior to desertification, the following process occurs:
Overfarming; this involves the planting of excessive crops on a piece of landNutrient depletion; nutrient gets depleted due to excessive use by plantsLack of plant growth; reduction in plant growth due to nutrient depletionLoss of topsoil due to erosionTherefore, the sequence that best explains the process of desertification is as follows: Overfarming → Nutrient depletion → Lack of plant growth → Loss of topsoil
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Answer:
C
Explanation:
good luck
what are some ideas to help reduce injury during physical activity?
How were Burmese Pythons introduced into the Florida Everglades?
Explain the term "molecular clock" and describe the types of measurements and comparisons that can be made with this type of clock.
Be sure to answer this question in paragraph form, using complete sentences.
A "molecular clock" is any technique that may be used to calibrate the age of a species / taxonomic group by using the mutation rate of one genomic sequence.
What is the mutation rate?The mutation rate is the time required for one sequence to mutate (change) in its nucleotide bases.
The mutation rate is used to estimate the age of one species by molecular clocks that estimate nucleotide differences in a given period of time.
In conclusion, a "molecular clock" allows estimating the age of a species by using the mutation rate.
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a decline in birth rates could lead to an increase in the percentage of elderly people in a population. How might this impact a country’s economy?
Answer:d
Explanation:
correct
If mitosis goes correctly, one diploid cell splits to form:
-none of the above
-two identical haploid cells
-one diploid and one haploid cell
-two identical diploid cells
Imagine an ecosystem with the following populations:
Level of Food Chain Types of Organisms
Producers
berry bushes
fruit trees
oak trees
maple trees
Primary consumers
rabbits
mice
squirrels
crickets
ants
grasshoppers
Secondary consumers
foxes
owls
spiders
hawks
Tertiary consumers
wolves
bears
Draw a food web representing the flow of energy in the ecosystem. Be sure to include all of the populations. If necessary, research each animal's diet to determine its place in the food web.
After completing your food web, answer the questions below.
If the ecosystem is balanced, which populations should be the largest? Which should be the smallest?
The food web is as shown in the attached image.
If the ecosystem is balanced, the highest population will be producers while the least population will be the tertiary consumers.
What is a food web?
A food web is an feeding relationship between organisms which shows interconnected relationships between different organisms in the habitat.
The food web of the producers, primary consumers, secondary consumers and tertiary consumers is found in the attached picture.
If the ecosystem is balanced, the populations that will be most is producers while the least population will be the tertiary consumers.
In conclusion, a food web shows the relationship between the organisms in the habitat in the form of a web.
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Why are scientists certain that the climate system is warming?
Answer:
Ice cores drawn from Antarctica, Greenland, and tropical mountain glaciers proves that Earth's climate responds to changes in greenhouse gas levels. You can also find ANCIENT evidence in tree rings, coral reefs, layers of sedimentary rocks, and ocean sediments.
( re word it to however you would've said it if possible.)
Explanation:
I learned about this already, and had to do deep research when I did.
Need help with my homework please
Answer:
I AM SORRY I WOULD HAVE HELPED IF I HAVE STUDIED THIS TOPIC
Explanation:
What are the reactants in Photosynthesis?
A. Water and Carbon dioxide
B. Oxygen and Carbon Dioxide
C. Glucose and Light energy
D. Water and Oxygenation
Answer:
My best guess would go with A
Explanation:
The reason why is that Photosynthesis needs sunlight, water and carbon dioxide to start reactants.
howard is working with a cleaning solution that contains sodium hydroxide although he is using gloves when he pours the solution to dilute it for cleaning he spills a bit on his arm his arm feels slimy to touch and now has a burn mark what is the chemical route to entry
The chemical route to entry in the given scenario will be by absorption. The correct option is d.
What is absorption?A process by which one thing becomes a part of another, or the process by which something soaks, either literally or metaphorically is referred to as absorption.
The missing options are :
InhalationIngestionInjectionAbsorptionAs in the given scenario, the solution gets spilled on the arms of Howard and is having a burn mark, which means the solution is absorbed in the skin and is the chemical route of entry.
Thus, the correct option is d.
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Which star is in its Super Giant Phase?
The star which is in its Super Giant Phase is the red supergiantsstar
What is a star?A star can be defined as fixed luminous body in the night sky which is large and also remote incandescent bodies.
However, at this Super Giant Phase, the gravitational force of the star is balanced by the immense outward radiation pressure caused by the intense helium fusion taking place in the core.
So therefore, the star which is in its Super Giant Phase is the red supergiantsstar
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Pls help me. Also include reason.
Answer:
well using logic c would be the correct answer seeing how a is going the opposite direction, b is going both directions and d is going on a stright line even though the disk is moving counter clockwise.
Explanation:
i kind of explained it up there ^
If we wanted to decrease overall atmospheric co2 how would we use the mechanisms of cellular respiration and photosynthesis to do this ?
We can decrease overall atmospheric CO2 by increasing photosynthesis rate or reducing cellular respiration.
What is cellular respiration?Cellular respiration is a process by which aerobic cells can produce energy and carbon dioxide by using the chemical energy of foods and oxygen.
Conversely, photosynthesis produces carbohydrates and oxygen by using carbon dioxide and sunlight.
In conclusion, we can decrease overall atmospheric CO2 by increasing photosynthesis or reducing cellular respiration.
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What is being nervous?
_
High Law View Rahul.
Answer:
Nervousness is a common feeling brought on by your body's stress response. This involves series of hormonal and physiological responses that help prepare you to handle a perceived or imagined threat.
What is the purpose of cellular respiration?
to create useable energy from glucose
to get oxygen and nutrients to all cells of an organism
to create useable energy from light
to release water into our bodies
Answer:
to create useable energy from glucose
Explanation:
energy is needed for all bodily functions
Although there is continuity of homeostatic mechanisms reflecting a common ancestry for all life, what is the accepted scientific explanation of why organisms have specific adaptations? (4 points)
Diversity provides opportunities for symbiotic relationships.
Organisms acquire beneficial adaptations through selective breeding.
Organisms choose to adapt to fill available niches.
Varying environmental factors determine the different traits.
Varying environmental factors determine the different traits is the reason why organisms have specific adaptations.
What is Adaptation?
This is the process in which organisms undergo certain changes which makes them become more suited to their environment.
Different environmental factors such as cold climate etc which ensures organisms survive through possession of thicker furs etc.
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What river is the main source of the water in Lake Mead and where does that water come from?
Answer:
The river that is the main source of the water in Lake Mead is the Colorado River. The Colorado River is a river in the western United States. The river is about 1,450 miles long. The river starts in the Rocky Mountains of Colorado. The river then flows through Utah, Arizona, Nevada, and California.
Explanation:
Identify the following:
a. the original cell that produces new cells through mitosis or meiosis
b. a group of four chromosomes that takes part in meiosis
c. the sex cell produced by the male
d. a unit of DNA that determines a specific hereditary trait in an organism; comes in pairs
e. a twisted and coiled strand of DNA within the nucleus that carries the codes for reproductive traits such as eye and hair color
f. the process through which organisms produce offspring; creation of a new individual
g. the creation of a new cell or organism identical to the parent; does not involve the union of sex cells
h. the cell part that holds the chromosomes and DNA that controls all cell activities
i. one of the two cells created when a parent cell divides through mitosis
j. a thin wall or covering that surrounds the nucleus of the cell
Answer:
Explanation:
a Germ cells
b Sister chromatids
c Sperms
d genes
e chromosome
f reproduction
g cloning
h nucleus
i sister cells
j nuclear envelope
A marine biologist took a sample from a hot spring. The cell has no nucleus and looks different from bacteria found in water.
A marine biologist took a sample from a hot spring. The cell has no nucleus and looks different from bacteria found in water is called archaea.
Who are the Archeas?Microbicidal archaea that are characterized as morphologically similar, but have different characteristics that were procaryated in a distinct group: the Archaea.
In this case, is Archeas because the cell has no nucleus and looks different from bacteria found in water.
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How do results prove the fish are genetically modified?
If both parents are fluorescent, can they produce a regular-colored offspring?
What conclusions came from this experiment?
The results show that fish are GMO when they fluoresce at night, GFP fish produce colored offspring when germinal cells are modified and conclusions indicate that transgenesis is viable.
What is the GFP protein?The Green fluorescent protein (GFP) is a protein used in molecular biology to produce genetically modified organisms (GMOs).
The GFP gene can produce stable fluorescent offspring if the transgenesis technique modifed the germinal line.
In conclusion, we can conclude that fish were genetically modified because they express the GFP protein and produce fluorescent offspring only when the germinal line was modified.
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Which of the following statements describes holoplankton?
a. microscopic organisms that drift in both marine and freshwater environments and perform photosynthesis
b. amongst the largest types of seaweeds belonging to the brown algae family that grow primarily in shallow ocean waters, developing into vast underwater forests
c. one of the two main sub types of zooplankton which, unlike meroplankton, are permanent members of the zooplankton family
d. various kinds of trees and shrubs that grow in saline coastal sediment habitats in the tropics and subtropics
Haloplanktons from the statement above are one of the two main sub types of zooplankton which, unlike meroplankton, are permanent members of the zooplankton family
What are holoplanktons?Holoplanktons can be defined as organisms which live in the water column and cannot swim against a current for their entire life cycle.
Holoplanktons are one of the two major types of zooplankton that spend their entire lives as part of the plankton. Some examples of these have are:
KillsArrow wormsTherefore, holoplanktons are permanent members of the zooplankton family
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Answer: C one of the two main sub types of zooplankton which, unlike meroplankton, are permanent members of the zooplankton family
Explanation:
Which of these vascular plants produce seeds?
A. Club mosses
B. all of these choices produce seeds
C. horsetails
D. pine trees
E.ferns
The vascular plants that produces seeds are pine trees. Thus, option D is correct.
What are vascular plants?
The type of plants in which a well developed vascular bundle is present in order to transport food, nutrients, as well as water from roots to the various parts of plants is known as vascular plants and the vascular plant that produces seeds is pine tree.
The process of germination has been defined as the process during which the organism grows from a spore or the seed and it has been applied to the sprounting of a seedling from the seed of a gymnosperms or an angiosperms.
The process of the germination just depends upon the temperature as well as availability of the water and if the temperature rise or there will be increase in the temperature the chance of the germination also increases. More increase in the temperature will lead to failure in the process.
Therefore, The vascular plants that produces seeds are pine trees. Thus, option D is correct.
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