Answer:
Biologists and other scientists use the scientific method to ask questions about the natural world. The scientific method begins with an observation, which leads the scientist to ask a question. She or he then comes up with a hypothesis, a testable explanation that addresses the question.
A hypothesis isn't necessarily right. Instead, it's a "best guess," and the scientist must test it to see if it's actually correct. Scientists test hypotheses by making predictions: if hypothesis \text XXstart text, X, end text is right, then \text YYstart text, Y, end text should be true. Then, they do experiments or make observations to see if the predictions are correct. If they are, the hypothesis is supported. If they aren't, it may be time for a new hypothesis.
How are hypotheses tested?
When possible, scientists test their hypotheses using controlled experiments. A controlled experiment is a scientific test done under controlled conditions, meaning that just one (or a few) factors are changed at a time, while all others are kept constant. We'll look closely at controlled experiments in the next section.
In some cases, there is no good way to test a hypothesis using a controlled experiment (for practical or ethical reasons). In that case, a scientist may test a hypothesis by making predictions about patterns that should be seen in nature if the hypothesis is correct. Then, she or he can collect data to see if the pattern is actually there.
Controlled experiments
What are the key ingredients of a controlled experiment? To illustrate, let's consider a simple (even silly) example.
Suppose I decide to grow bean sprouts in my kitchen, near the window. I put bean seeds in a pot with soil, set them on the windowsill, and wait for them to sprout. However, after several weeks, I have no sprouts. Why not? Well...it turns out I forgot to water the seeds. So, I hypothesize that they didn't sprout due to lack of water.
To test my hypothesis, I do a controlled experiment. In this experiment, I set up two identical pots. Both contain ten bean seeds planted in the same type of soil, and both are placed in the same window. In fact, there is only one thing that I do differently to the two pots:
One pot of seeds gets watered every afternoon.
The other pot of seeds doesn't get any water at all.
After a week, nine out of ten seeds in the watered pot have sprouted, while none of the seeds in the dry pot have sprouted. It looks like the "seeds need water" hypothesis is probably correct!
Let's see how this simple example illustrates the parts of a controlled experiment.
Explanation:
Body waves are seismic waves that travel through the middle of the Earth; surface waves are seismic waves that travel along the surface of the Earth. * True False
Answer:
True
Explanation:
It is correct that body waves travels through the middle of the earth and surface waves travels along the surface.
Seismic waves are elastic waves that are produced when the earth is disturbed. There are two categories of the wave which are body and surface waves. Body waves are the P and S - waves that travels through the earth. Surface waves are the love and Rayleigh waves which moves on the surface.Answer:
False on Edg 2022
Explanation:
Two identical twins live in the same city; one smokes and one doesn’t. The one who smokes develops lung cancer. What is the best reason for this?
A.
mostly genetics factors
B.
genetics and environmental factors
C.
mostly environmental factors
D.
it was not related to their genetics or environment
Helllpppp!!!!
How would the disappearance of shrimp, copepods, and amphipods affect the other organisms in the ocean food web
What is the coastal plain? (1 point) A.a raised area in the foothills of the Appalachian Mountains
B.a series of mountains and mountain ridges that are related
C.a flat, lowland area on the coast of the Atlantic ocean
D.a tall, steep area where rivers form rapids and waterfalls
Answer:
c
Explanation:
I promise you
Coastal plain is a flat, lowland area on the coast of the Atlantic ocean.
What is a coastal plain?The coastal plain is a flat, lowland area that is located on the coast of the Atlantic ocean. It extends from the eastern edge of the Appalachian Mountains to the Atlantic coast and includes the eastern part of the United States and parts of Canada and South America.
The coastal plain is characterized by flat terrain, with a few hills and small mountains. It is an important region for agriculture, forestry, and other economic activities, as well as for biodiversity and ecological processes.
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State Newton's 1st Law of Motion: Least a sentence or two best explaining it.
Answer:
Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.
Explanation:
In a water molecule the electrons are not equally shared , creating a ____ molecule .
Please help me
Answer:
Polar
Explanation:
In a water molecule, the oxygen atom is bigger and has a greater pull on the electrons than the hydrogen atoms do. This makes the molecule polar.
This illustration of a cell has a label. If there were no label, how could you tell that this cell is a plant cell and not an animal cell?
Group of answer choices
The cell has a nucleus.
The cell is surrounded by a cell membrane.
The cell is surrounded by a cell wall.
The cell contains cytoplasm.
Answer:
the cell is surrounded by a cell wall
Explanation:
only plant cells have a cell wall.
Answer:
The cell is surrounded by a cell wall
Explanation:
FIrst off, we can eliminate the first option because all cells have a nucleus.
Second off, all cells have a cell membrane, but animal cells DON'T have cell walls, which makes it option 3.
Finally, it's not "The cell contains cytoplasm due to both animal and plant cells having them.
A large photograph displayed on a store’s website would NOT qualify for fair use under which guideline?
Answer:
copyright
Explanation:
An enzyme acts as a catalyst to a chemical reaction by
Answer:
Speeding up chemical reactions by lowering the activation energy.
Explanation:
by lowering the activation energy
Help me with these two questions please !!!!!!!!!!!!!!
Answer:
Question 13: C
Question 14: D
Have a great day, hope this helps :)
What does the SAGE instrument measure?
Answer:
The SAGE instrument measures the amount of ozone and other trace gases that are in the atmosphere by measuring the amount of sunlight that comes through the atmosphere at different altitudes.
Explanation:
What is a boundary in which two plates move apart from each other called?
Answer:
A divergent boundary!
Explanation:
Hope this helps! <3
brainliest - An offspring inherits an equal amount of its genetic information from each parent true false
Answer:
true
they get equal chromosome from each parent.
Answer: False
Explanation:
While women do inherit 50% of their DNA from each parent, men inherit about 51% from their mother and only 49% from their father. ... To answer this question, first a little 101 in genetics: all humans, both male and female, inherit 23 chromosome pairs from their parents, for a total of 46 chromosomes
Which is a common use of minerals?
A.pasta
B.toothpaste
C.applesauce
D.wooden craft stick
Answer: Toothpaste!!
Explanation:
Toothpaste commonly uses minerals like calcium and fluoride etc.
Hope this helps!!! :D
Answer:
The answer is B. toothpaste.
Explanation:
This is because toothpaste contains minerals like fluorid, and sometimes charcoal. I really hope this helps! If your reading this right now I hope you get a good grade and god bless you, your family, and friends! Happy Thanksgiving!✨
Help me please....pleaseeeeee
Answer:
B
Explanation:
When your body gets to the tempature of 98.8F you start to over heat and sweat.
Record the etymology of biometric
Define biometric, relating it to the etymology
Relate biometrics to identify thief
Explain the role that body systems, organs, cells or tissues play in identity
Answer:
Biometrics refer to measurements and different sort of calculations related to our body. For example their is Face ID and Fingerprint for their phones to know it’s actually them.
Relate biometrics to identify thief As hackers and identity thieves have gotten more sophisticated in their practices, a password alone may not be enough to keep all our personal information completely secure.
Explain the role that body systems, organs, cells or tissues play in identity
Cells contain the DNA that codes for proteins
Explanation:
pls pls pls help
will mark brainliest
what happens with the relative positions of the Sun and the Moon in the sky?
Answer:
the moon and the sun line up above earth and sometimes creates eclipses.
Explanation:
I took the test. Please mark brainliest
When a person eats the yogurt, the 14 grams of protein will be A combined into monosaccharides. B combined into polysaccharides. C broken down into amino acids. D broken down into nucleic acids.
Answer:
C broken down into amino acids.
Explanation:
Proteins are one of the four major biological molecules. They are organic polymers made up of monomers called AMINO ACIDS. Proteins are contained in food we ingest and are subsequently digested or broken down into their amino acid components.
In this case, when a person eats yogurt (containing proteins), the 14 grams of protein will be broken down into amino acids during digestion by enzymes called PROTEASES. Note that every polymer will be broken down into its monomeric constituents during digestion.
USE RACES: Why is a food web a better model for explaining energy flow
than a food chain?
Explanation:
Because it shows the relation of organisms with each other in a habitat, rather than just a small segment of it like a food chain. It is also still pretty easy to understand like a food chain.
What do I say for these three questions?
Answer:
6. Amoxicillin & Metronidazle
7. Ibuprofen(acetaminophen) & (metformin) glucophage
8.1. Ibuprofen, tylenol, advil. 2. glucophage
Explanation:
1 . Amoxicillin and Merronidazle are 2 of the most used antibiotics. 2 Ibuprofen is medicine used for headaches, and metformin is normally related to sugar issues. 3. these are types of medicines that are from a certain generic name.
Can someone help me with this
Answer:
true false true
Explanation:
I've done this before and got it right
Which of the following best describes a population?
Answer:
Explanation:
A number of things/people that populate on place
Give an example of how Eubacteria can be beneficial. Explain. Please help me.
Answer:
Some bacteria are good for you, including the bacteria in your digestive system, or gut. These bacteria help to break down food and keep you healthy. Other good bacteria can produce oxygen are used to create antibiotics. Bacteria are used in food production to make yogurt and fermented foods.
An example of how Eubacteria can be beneficial is that these bacteria fix nitrogen for soil that can be used by living beings.
What are eubacteria?The bacteria in your gut and digestive tract are among the beneficial bacteria. These microorganisms aid in the digestion of food and promote good health. To make antibiotics, other beneficial microorganisms that can also produce oxygen are employed. Yogurt and other fermented foods are produced using bacteria in the food industry.
Oxygen, carbon, nitrogen, and phosphorus that living things like animals and plants cannot use can be converted by eubacteria into usable forms. In the soil, they fix the nitrogen that is present in the air.
Therefore, Eubacteria can help the environment by fixing nitrogen into the soil so that living things can use it.
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There are _____ levels of intellectual disabilities on the modern continuum.
A.
five
B.
four
C.
three
D.
two
Answer:
B) Four
Explanation:
There are four levels of intellectual disabilities on the modern continuum. The correct option is B.
What are intellectual disabilities?A person is said to have an intellectual disability when their capacity to learn at a typical rate and function in daily life is restricted. The severity of intellectual disability in children varies widely.
Despite the fact that a precise full-scale IQ test result is no longer necessary for diagnosis, standardised testing is nevertheless used to help make the diagnosis.
A full-scale IQ score of between 70 and 75 denotes a considerable intellectual functioning restriction.
Each person's level of difficulty with learning and processing information, difficulties with abstract cognition, and issues with social interaction are all common aspects of intellectual impairments.
On the contemporary continuum, there are four stages of intellectual disability.
Thus, the correct option is B.
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Which describes the process of a bacterial cell dividing to create two daughter cells? O binary fission O fertilization O meiosis gamete formation
In the Calvin cycle the conversion of energy poor carbon dioxide into energy rich glucose
A) atp is used
B) pyruvic acid is produced
C) oxygen is produced
D) nadph is made
Answer:
D)NADPH is made
A)ATP is used
Explanation:
Sorry to ask the two questions, I asked why the two options are in the process:Reduction. In the second stage, ATP and NADPH are used to convert the 3-PGA molecules into three-carbon sugar molecules, glyceraldehyde-3-phosphate ( G3P ). At this stage, it gets its name because NADPH donates, or reduces , electrons to a three-carbon intermediate to form G3P.[Ocultar detalhes]
The reduction stage of the Calvin cycle, which needs ATP and NADPH, converts 3-PGA (produced in the fixation stage) into a three-carbon sugar. This process takes place in two main stages:
Simplified diagram of the reduction step of the Calvin cycle showing the carbon atoms, but not the complete molecular structures. A 3-PGA molecule first receives a second phosphate group from ATP (generating ADP). Then, the doubly phosphorylated molecule receives electrons from NADPH and is reduced to form glyceraldehyde-3-phosphate. This reaction generates NADP + and also releases an inorganic phosphate.
Simplified diagram of the reduction step of the Calvin cycle showing the carbon atoms, but not the complete molecular structures. A 3-PGA molecule first receives a second phosphate group from ATP (generating ADP). Then, the doubly phosphorylated molecule receives electrons from NADPH and is reduced to form glyceraldehyde-3-phosphate. This reaction generates NADP + and also releases an inorganic phosphate.
First, each 3-PGA molecule receives a phosphate group from ATP, becoming a doubly phosphorylated molecule called 1,3-bisphosphoglyceride (and leaving an ADP as a by-product).
Second, 1,3-bisphosphoglycerate molecules are reduced (gain electrons). Each molecule receives two electrons from NADPH and loses one of its phosphate groups, becoming a three-carbon sugar called glyceraldehyde-3-phosphate (G3P) . This step produces NADP^+
+
start superscript, plus, end superscript and phosphate (\text P_iP
i
start text, P, end text, start subscript, i, end subscript) as by-products.
The chemical structures and real reactions are:
Reactions of the Calvin cycle reduction step, showing the molecular structures of the molecules involved.
Reactions of the Calvin cycle reduction step, showing the molecular structures of the molecules involved.
The ATP and NADPH used in these steps are products of the photo-dependent reactions (first stage of photosynthesis). That is, the chemical energy of ATP and the reducing potential of NADPH, both produced with the use of light energy, keep the Calvin cycle running. Conversely, the Calvin cycle regenerates ADP and NADP^+
+
start superscript, plus, end superscript, providing the necessary substrates for photo-dependent reactions.
Answer:
m
Explanation:
m
Water found in an river is...
A - Salt Water
B - Fresh Water
Answer:
B fresh water. salt water is a mixture found in oceans. hope this helps!
this life cycle is...
a. haplontic
b. diplontic
c. haplodiplontic
Answer:
C
Explanation:
What characteristics apply to gymnosperms? (Choose all that apply)
use seeds to reproduce
use spores to reproduce
have vascular tissue
have cones as reproductive structures
Answer:
Have cones as reproductive structures.
Have vascular tissue.
Explanation:
The gymnosperms have vascular tissue and have cones as reproductive structures.
What are gymnosperms?The gymnosperms are woody like plants having a cone shaped structure, bear no flowers, no fruits but bear seeds; The seeds are with out coat and they are not covered by the fruit wall.
Gymnosperms produce seeds which are not enclosed in an ovary, while in Angiosperms the reproductive organs are the flower, they may involve in double fertilization resulting in a diploid zygote, and a triploid endosperm.
Gymnosperms produce seeds and fruits from their flowers, the flowers in gymnosperms helped in the propagation of the plants, it attract pollinators and attracted seed to dispersers, gymnosperms became dominant among plants.
The modification of the gymnosperm includes Modified leaves, Sunken stomata, Pointed and thick cuticle leaves, Less transpiration rate.
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The conversion of stored potential energy into kinetic energy can also be harnessed to power homes, factories and entire cities. Which example from the text supports this conclusion?
Answer:
The conversion of stored potential energy into kinetic energy can also be harnessed to power homes, factories and entire cities. The most notable example is the Hoover Dam. The Hoover Dam is an arch-gravity dam by design. This design name is the first clue as to how exactly the dam harnesses energy.
