The precautionary principle is invoked after there has been established that there is risk in the use of a product.
What is the precautionary principle ?The precautionary principle is invoked when it is supposed that a particular product or a drug could put the lives of people at risk. This has been invoked many times in the health sector.
The situation in which the precautionary principle is least strictly applied is when a chain of health stores is allowed to sell over-the-counter nutritional supplements that have not been tested by the Food and Drug Administration for adverse effects.
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Question 1 of 17 Pag
Question 1
Different substances have different properties that can be used to identify them. There are three test tubes X, Y, and Z filled with gas.
Can the properties of the gas in each test tube be used to tell whether the gases are the same or different?
What do you think might happen when a gas is exposed to a small flame? List as many possible results as you can think of
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The properties of the gas in each test tube can be used to tell whether the gases are the same or different, because depending on the substance, chemical reactions will occur.
What do you think might happen when a gas is exposed to a small flame?This happens in the flame test, which is based on the fact that when a certain amount of energy is supplied to a certain chemical element (in the case of a flame, energy in the form of heat), some electrons in the last valence shell absorb this energy.
Moving to a higher energy level, producing what we call an excited state. When one of these excited electrons returns to the ground state, it releases the energy previously received in the form of radiation.
With this information, we can conclude that the properties of the gas in each test tube can be used to know if the gases are the same or different, because depending on the substance, chemical reactions will occur.
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2. Summarize the trends you see in each population from each generation. a. Dark bears— b. Light bears—
The black bear has a tendency to proliferate, whereas the polar bear has a tendency to undergo faster extinction because they live in the arctic.
Dark bearsThe black bear (Ursus americanus), also known as the baribal, is a North American bear, found from Alaska to northern Mexico. It reaches 2.20 m in length, 1.10 m in height at the withers and 360 kg in weight.
Light bearsThe polar bear (Ursus maritimus) is a solitary mammal that lives in the icy waters of the Arctic Circle region. It is the largest species of bear that lives in places with low temperatures, being much feared by other animals that inhabit the place.
Considered the largest terrestrial carnivore and main symbol of arctic resistance, the polar bear has been suffering from climate change.
Whit this information, we can conclude that the black bear has a tendency to proliferate, whereas the polar bear has a tendency to undergo faster extinction because they live in the arctic.
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7. How did scientists determine the age of the ocean floor?
a. by calculating magnetic reversals
b. by the age of the rock samples
c. by evaluating earthquake depth
Answer:
a. By Calculating magnetic reversals.
Explanation:
They determine the age of the ocean floor by examining magnetic fields in the planet Earth.
What are one advantages and disadvantages of RENEWABLE resources?Use these sentence starters to help you:
One advantage of renewable resources is ____________.
One disadvantage of renewable resources is _____________.
Answer:
One advantage of renewable resources is that it won't run out.
One disadvantage of renewable resources is that it has limited storage capabilities
. Which of the following types of erosion is caused by landslides?
a. Gravity erosion
b. Wind erosion
c. Wave erosion
d. Temperature erosion
e. Flood erosion
Answer:
a. Gravity erosionerosion
Explanation:
Energy pyramids show the most available energy at the base and the least amount of energy at the top. What accounts for the difference in the energy levels in these two parts of the energy pyramid?
choices:
A. Some of the energy is destroyed
B. The energy is used by decomposers
C. The energy is continually recycled in the biosphere
D. With each succeeding level, most of the energy is used by the organisms for life processes and some of the energy is "lost" as heat
Answer:
D
Explanation:
the energy from the sun is gradually lost after each level increase because the organism before being eaten uses the energy to stay alive such as staying warm or running from predators
Viruses require __________ for growth (to spread).
bacteria
plants
animals
living cells (host)
Answer:
Living cells
Explanation:
Viruses require living cells. Viruses aim to replicate themselves, and cells do exactly that. By injecting their DNA into a living cell, the cell will replicate the virus's DNA and infect other cells, spreading it more and more in the organism.
How long does it take for tadpoles to turn into frogs?.
Answer:
about 14 weeks.
What color is reflected back to cause plants to appear green?
Answer:
Chlorophyll gives plants their green color because it does not absorb the green wavelengths of white light. That particular light wavelength is reflected from the plant, so it appears green.
Chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum. Green light is not absorbed but reflected, making the plant appear green. Chlorophyll is found in the chloroplasts of plants.
Chlorophyll absorbs light most strongly in the blue portion of the electromagnetic spectrum, followed by the red portion. Conversely, it is a poor absorber of green and near-green portions of the spectrum, hence the green color of chlorophyll-containing tissues.
Explanation:
Have a great rest of your day
#TheWizzer
Because chlorophyll does not absorb the green wavelengths of white light, it is chlorophyll that gives plants their green color. Thus, the correct option is B.
What is Chlorophyll?Chlorophyll is a pigment that is found in all green plants as well as some other species. It is crucial for the process of photosynthesis, which transforms light energy into chemical energy.
The chlorophyll pigment is in charge of giving plants their characteristic green hue since it does not absorb the green portions of white light; as a result, the plant reflects the particular light wavelength, giving it the appearance of being green.
Since chlorophyll is a poor absorber of the green and near-green portions of the electromagnetic spectrum, tissues containing chlorophyll are green in color. Chlorophyll absorbs light most powerfully in the blue and red portions of the electromagnetic spectrum.
So, the correct option is B.
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Which term is used to describe an organism's genetic make-up?
Answer:
genotype
Explanation:
1.what causes muscle fatigue after avery hard physical exercise ?
During a very hard physical exercise lactic acid will be alocated, that causes muscle fatigue.
Examine the process represented in the diagram.
Which choice best describes what is occurring at step B?
Two strands of DNA form a double helix.
DNA and proteins form tight coils.
DNA wraps around histones.
Coils of DNA and proteins wind into larger coils.
The Process of Chromosome Creation is as follows:
First is the forming of a double helix by 2 strands of DNANext is the wrapping around of 8 Histones with DNA.Then, the wrapping of Histones with Nucleosome Arrays (aka The "Tight Coil" Step).Finally, the Coils of DNA and proteins wind into larger coils.Answer:
DNA wraps around histones.
I am accepting any correction if I accidentally stated false information :).
P.S. I'm just in my 9th grade :D (I tried my best to explain this, I hope this helped you)
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2. Which of the following is true of the Golgi apparatus?
A) It is especially extensive in cells specialized for absorption.
B) It consists of flattened membranes dotted with ribosomes.
C) It is a membrane-bound vesicle with hydrolytic enzymes.
D) It is specialized for production of hydrogen peroxide.
E) It is involved in modifying and shipping proteins out of cells.
an
What is the correct answer?
The answer is E; after proteins are produced by the rough endoplasmic reticulum / ER, the proteins go to the Golgi Apparatus to be repackaged and modified before being sent out of cells!
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Polymers are made up of which of the following?
Atoms
Electricity
Threads
Pigments
Answer:
Your answer is A.) Atoms.
Explanation:
Hope this helps you!
Answer:
Threads
Any fabric you take from earth's surface they are made up threads.Polymers are also one kind of fabric .So they also contain threadsOption C
Who was the famous political cartoonist who made Uncle Sam popular?
Answer:
Thomas Nast
Explanation: American cartoonist Thomas Nast cemented the image of Uncle Sam in his own drawings during the 1870s. By the early 1900s
8. After learning about Walker and her love of and exploration of galaxies, what questions do you still have? What do you want to know more about?
After learning about Walker and her love of and exploration of galaxies, the most questions often ask is how these galaxies came into existence.
How these galaxies came into existence?Galaxies are known to be the product of a start of small compositions or clouds of stars and dust that are said to have been moving about through space.
Conclusively, Note that as other different clouds tries to get close, gravity is known to be the force that sends these objects scattering into each other then they mix up together to form a bigger spinning packs known as Galaxies
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Which sphere is the atmosphere interacting with when winds are produced over oceans?.
Answer:
The hydrosphere
Explanation:
The atmosphere interacts with the hydrosphere to redistribute water over the surface of Earth.
unifying scientific explanation supported by testing
Unscramble the word.
RYTHOE
Answer:theory
Explanation:
it stood out to me
Drea is comparing three organisms. Two have many of the same characteristics. But they have very few characteristics in common with the third organism. What can Drea infer about the relatedness of these three organisms?
Group of answer choices
The first two are unrelated, but each is related to the third.
Relatedness of the three organisms depends on the characteristics the first two share.
The first two are more closely related to each other than they are to the third.
The first two are equally related to the third.
Answer:
The first two are more closely related to each other than they are to the third.
Explanation:
The question tells us that the first two organisms share many common characteristics with each other, this tells us that the first two are related. We can cross out answer choice a. The question also tells us that the first two have very few characteristics in common with the third organism. With this much info given, the answer choices left are:
Relatedness of the three organisms depends on the characteristics the first two share.The first two are more closely related to each other than they are to the third.The first two are equally related to the third.First choice doesn't make any sense, there is no correlation between the common characteristics of the first two with the 3 organisms as a group.
Second choice makes sense and logical.
Third choice is wrong since the question does not give us enough information to know the first two is equally related to the third.
The first two are more closely related to each other than they are to the third. Is the right answer.
Melanin is a protein that causes color in fur.
True
False
Answer:
False
Explanation:
It is false because melanin is a GENE that causes color in fur, skin, hair etc..
I hope it helps! Have a great day!
Pan~
Answer:
False
Explanation:
Melanin is a gene not a protein, although melanin does cause the color in animal’s fur.
I hope it helps! Have a great day!
Anygays-
DNA typing is based on analyzing parts of the genome that don't really affect other genetic functions.
A. True
B. False
The question proposed is in fact false, given that the variations being analyzed do in fact affect the individual.
Why is this question false?DNA typing uses the detection of polymorphisms to identify an individual. These polymorphisms are variations in the genetic code that are considered to be normal. These variations are said to not be harmful nor beneficial but do in fact impact the rest of the genome in very subtle ways.
Therefore, we can confirm that the question proposed is in fact false, given that the variations being analyzed do in fact affect the individual.
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A box is pushed a distance of 4 meters with a force of 10 N. How much work has been done?
6 units of work
40 units of work
14 units of work
No work has been done
The quantity of work done by the box is equal to 40 units of work.
Given the following data:
Distance = 4 meters.
Force = 10 Newton.
How to calculate work done.In Science, work done is generally calculated by multiplying force and the vertical distance (displacement) that is covered by an object.
Mathematically, work done is given by the formula:
Work done = force × distance
Substituting the given parameters into the formula, we have;
Work done = 10 × 4
Work done = 40 units of work.
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Ethnopharmacology is a subdiscipline in the field of ethnomedicine. Identify what someone within the ethnopharmacology field might do during their research.
Which organism has the more efficient heart?
A: a frog
B: a robin
C: an alligator
D: a tuna
Answer:
I think its a alligator or a frog I'm not rlly sure but I think it might be a alligator
what is one benefit to giant octopuses laying many eggs?
Answer:
The majority of baby octopuses born don't reach adult hood, laying more eggs increases the number of babies that have a chance to make it to adulthood.
Answer:
During courtship, both octopuses use their sense of sight to determine attraction. Males are looking for a large female. Larger diploid females produce more haploid eggs, by meiosis If more eggs are fertilized, it gives the male a greater probability to pass on his genes.
Explanation:
just allows males to pass on more of their traits
Which of the following is a genotype for an individual heterozygous for a trait?
a. Rr
b. tt
c. YY
d. Pr
Answer:
A. Rr
Explanation:
A. has the same phenotype
D. has different prototypes
How does a noncompetitive inhibitor decrease the rate of an enzyme-catalyzed reaction?.
Compare the chromosome number of the parent cell with that of each daughter cell.
Answer:
In mitosis, the daughter cells have the same number of chromosomes as the parent cell, while in meiosis, the daughter cells have half the number of chromosomes as the parent.
Which of the following explains why it is important to store feed correctly?
Answer:
the important explaination we must store food in the cool place
help please giving brainlist
Answer:
Decomposer
Explanation:
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