Answer:
If a scientific idea has been proven 100% of the time, like gravity, it becomes a theory, whereas an idea that is generally believed but has not been proven to be 100% true would be called a hypothesis
Explanation:
In scientific research, a hypothesis is an idea put forward before any research has been completed. It is based on previous data, and requires scientific testing before it is confirmed and becomes a theory.
A theory is a principle put forward to explain a range of observations. For example, multiple lines of evidence support the theory of evolution. There is no significant data that refutes the theory.
Which does not have scales?
amphibian
reptile
fish
Answer: amphibians
Explanation:
noice :3
Help with these two ?
Explain the process that creates wind.
Answer:
Winds are caused by differences in air pressure. Unequal heating of Earth’s surface creates areas of different pressure. Cooler areas have higher air pressure. Warmer areas have lower pressure. This causes air to move from high pressure to low pressure. This movement is the wind we feel.
Answer:
Wind is air in motion. It is produced by the uneven heating of the earths surface by the sun. since the earths surface is made of a various land and water formations, it absorbs the sun's radiation unevenly. Two factors are necessary to specify wind which is speed and direction.
Explanation:
Select the type of scientific communication that is best represented in each of the following examples.
An interactive exhibit about the human body at a science museum:
Four students working together to complete a biology laboratory experiment:
A poster presentation of a project at a school science fair:
An original research article published in a scientific journal:
A panel of scientists at a press conference answering questions about an oil spill:
A researcher at sea e-mailing the latest data to a fellow scientist at a university:
Answer:
1. Public
2. Classroom
3. Classroom
4. Professional
5. Public
6. Professional
Explanation:
Based on the given examples for scientific communication that is best represented, the answers are as follows:
1.Public
2. Classroom
3. Classroom
4. Professional
5. Public
6. Professional
Answer:
public
classroom
classroom
professional
public
professional
Explanation:
Which of the following is an example of commensalism?
Answer:
D. A bird builds a nest in a tree
Explanation:
The action above is only benefitting thee bird but not the tree but at the same time it is not hurting the tree. This is an example of commensalism.
Anyone know the answer?
Compare and contrast what happens in mitosis and meiosis. A) Mitosis is imporyant for growth and repair
Answer:
Mark as Brainliest!! Please!!!!
Explanation:
The process of mitosis generates new cells that are genetically identical to each other. Mitosis helps organisms grow in size and repair damaged tissue.
Rain forests are home to many of the largest animals on Earth.
True
False
Answer:
True
Explanation:
Wombats are mammals with a gestation period of about
20 days. At birth, the baby wombat, called a joey, is tiny
and hairless. It crawls into its mother's external pouch
where it continues to develop for about eight months.
Based on this information, wombats are classified as
______mammals.
Answer:
marsupials
Explanation:
Explain the similarities and differences between endocytosis and exocytosis, and give an example of each.
Which factors involving the activities of people are a threat to biodiversity?
Answer:
a few factors include pollution, littering, hunting, poaching, and loss of habitat.
In "Close Encounters of the Bear Kind," what is the author's point of view toward bear researcher, John Hechtel?
Answer:
they are very facinating in there own way
An animal cell: the human body. Different but also alike. Your skin acts as the first line of defense against invaders. In this animal
cell, the
has a similar purpose.
A)
Golgi body
B
mitochondria
C
plasma membrane
D
endoplasmic reticulum
Answer:
Explanation:
C.
In this animal cell, the has a similar purpose as of skin is plasma membrane. The correct option is C.
What is plasma membrane?The membrane that basically divides the interior of the cell from the external environment is known as the plasma membrane, sometimes known as the cell membrane, and it is present in all cells.
The cell membrane isolates a cell's interior contents from its external environment, just like your skin's outer layer does for your body and its surroundings.
The cell membrane acts as a barrier to protect it and controls what can enter and leave the cell.
One of the body's first lines of defense against hazardous germs is the skin, which acts as a barrier. Skin tissue contains specialized immune cells that aid in the defense against invaders.
The skin, however, is home to a variety of communities of helpful bacteria known as the skin microbiota.
Thus, the correct option is C.
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Which of the following require clear warning signs or labels? Check all that apply
The options that would clearly require the use of warnings would be:
Places where a spill was recently cleanedContainers with bodily fluidsWhat is a warning sign?This is the term that is used to refer to the signs that are placed in objects so that it would serve as precaution to the people around who may come in contact with those objects.
The goal of the warning sign is to ensure that people do not suffer un desirable consequences when they get in contact with these items which may have the potentials of causing them harm.
For instance bodily fluids that are infected may be harmful to other people hence the need to ensure that it is well protected and has all of the right labels on it.
Also area that spills have occurred may be radioactive area as and they may be dangerous to the health of persons that go near them.
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Answer:C,D
Explanation:
What does the circulatory
and respiratory systems do?
Answer:
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
Explanation:
7. _________________ consumers eat secondary consumers.
Dinitrophenol (2,4-DNP) destroys proton gradients without affecting anything else about a membrane. Its pKa slightly acidic, so it can be protonated or unprotonated in cells.a. What would be the effect of adding dinitrophenol to the mitochondrial inner membrane
Answer:
the effect of adding dinitrophenol to the mitochondrial inner membrane is -:
Production of ATPNo electron transferproduction of more sugar as energyUncoupling of ETC(electron transport chain)Explanation:
Dinitrophenol is an uncoupler which can isolate the progression of electrons and siphoning of H+ particles for ATP Synthesis. On adding the dinitrophenol, the energy from the electron move can't be utilized for ATP blend. It has been utilized in diet pills and as a counting calories help. It goes about as protonophore and permits spillage of the protons through the internal mitochondrial layer which subsequently sidesteps ATP synthase and consequently the creation of ATP creation gets wasteful. It hinders the ATP synthase and thus its capacity to deliver ATP. It likewise influences the ETC in light of the fact that forestalls development of electrons over the ETC. Uncoupling the ETC would prompt diminished ATP creation and consequently increasingly more sugar is used as energy. This would restrict accessibility of ATP and make a deadly circumstance.
What event might occur when favorable adaptations build up in a population over many generations?
starvation
extinction
migration
speciation
will give brainlist
Answer:
D. speciation
Explanation:
Over many generations, these favorable adaptations build up in a population. This may lead to speciation, which is the development of a new species.
Convection occurs when heat transfers through
a.direct contact
b.electromagnetic waves
c.no particles of matter
d.fluid movement
What is the gradient formula?
Explanation:
The gradient of the line = (change in y-coordinate)/(change in x-coordinate) . We can, of course, use this to find the equation of the line. Since the line crosses the y-axis when y = 3, the equation of this graph is y = ½x + 3 . To find the gradient of a curve, you must draw an accurate sketch of the curve.
please help need now
What role do glucose and oxygen play in cellular respiration? O They are reactants because they are present before the reaction. They are reactants because they are present after the reaction. O They are products because they are present before the reaction. O They are products because they are present after the reaction. reagiging
Answer:
They are reactants because they present before the reaction. Hope this helps!
Explanation:
I took the chapter test
PLEASE ANSWER ASAP WILL MARK BRAINLIEST:
A region experiences frequent landslides from heavy rains. How can the local residents lower the frequency of landslides in the region?
B. Plant vegetation on the slops that expreience landslides.
E. Reduce the sloped where landslides occur.
Hope this helped, please mark brainiest!
The____
absorbs digested food.
Plz help will give Brainlyliest answer first plz and thanks T-T
Answer:
small intestine
Explanation:
When meiosis occurs, how many chromosomes does it create?
Answer:23 chromosomes
Explanation: During meiosis only half of the 46 chromosomes are created.
To resist the ____ of gravity you have to pull on an object with more force than gravity.
Answer:
Pull
Explanation:
I think it's pull I'm 80% sure
new nerve pathways are shaped by
experience
glucose
oxygen
blood
Answer:
oxygen....
Explanation:
hope this helps ✌
What type of light is trapped in the Green House
Answer:
infrared light
Explanation:
The Earth absorbs this energy from the Sun and reemits it in the form of invisible infrared light. This energy is trapped by the greenhouse effect. Greenhouse gases have various shapes that make them effective at absorbing infrared radiation emitted by Earth.
It is a light called an infrared light.
Only the light in the visible spectrum can penetrate into the greenhouse whereas incoming infrared light, which is also known as heat radiation, is blocked by the glass or plastic.
The enzyme threonine deaminase, in addition to being controlled by feedback inhibition, is controlled by _____.
Answer:
noncompetitive inhibition
Explanation:
Non-competitive inhibition (also known as allosteric inhibition) is a type of enzymatic reaction where an inhibitor binds to the enzyme and thus reduces its enzymatic activity. Non-competitive inhibitors are known to bind with the enzyme at allosteric sites, i.e., at different sites rather than the active site. In consequence, during non-competitive inhibition, the substrate can still bind to the enzyme, although that binding to the inhibitor reduces its catalytic efficiency. Conversely, competitive inhibition is produced when the inhibitor binds to the enzyme at the active site, thereby preventing from binding to the substrate.
What must match between a virus and a host cell?
A)DNA= Cell DNA
B)RNA=ribosome
C)envelope proteins= cell receptors
D)blood types
Answer:
C)envelope proteins= cell receptors
Explanation:
To enter the cell, the virus must bind to receptor proteins on the cell surface It does so via its envelope proteins. When the receptors and the envelope proteins match, the virus can become engulfed into the cell.
Once it enters the cell, the hijacks the cell's transcription and translation machinery and causes the viral proteins to be expressed. The viral proteins assemble into viral particles. Eventually, the cell bursts and the viral particles are released.
Thermohaline circulation supplies heat to polar
Answer:
Your are correct.