Answer:
Correct option is A0 Based on the dispersion of white light into its constituent colours, we can conclude that (a) the white light consists of seven colours
Correct option isA0Based on the dispersion of white light into its constituent colours, we can conclude that (a) the white light consists of seven colours(b) the violet light suffers maximum deviation and the red light suffers minimum deviation.
Based on observations from dispersion, it can be concluded that white light is composed of seven colours of light.
What is dispersion of light?Dispersion of light is the separation of white light onto its constituent color as it passes through a refraction prism.
White Light consists of seven colours of varying wavelength.
When light is passed through a refracting prisms, dues the difference in the speed of the different constituents of light, seven colours of light are produced.
Therefore, based on observations from dispersion, it can be concluded that white light is composed of seven colours of light.
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PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:
D
Explanation:
When the animals eat the food it's converted into energy
which type of bond forms between water molecules
Answer:
hydrogen bonds
Explanation:
Hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules.Attraction between individual water molecules creates a bond known as a hydrogen bond.
Answer:
hydrogen bonds.
Explanation:
In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules creates a bond known as a hydrogen bond.
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During the winter, purple finches are often seen in Florida. During the summer, purple finches are rarely seen in Florida. Explain why this change occurs between the two seasons.
Because during summer they don't like to be around urban areas and housing, they are always in coniferous forests; You might see them close to your house but only if they are struggling when the food is scarce, they usually migrate from Canada to grounds to winter widely across central and Southeastern U.S. which includes Florida; but on summer they prefer to stay in deep and damp coniferous forests.
please help me here the picture
Answer:
by using half to balance the equation
A flask containing photosynthetic green algae and a control flask containing only water are exposed to a cycle of 12 hours of light and 12 hours of darkness. Which of the following statements best describes how the relative dissolved oxygen concentration in the flask with algae will compare to the control flask?
A. The dissolved oxygen in the flask with algae will not be different from the control flask at any time.
B. The dissolved oxygen in the flask with algae will always be higher.
C. The dissolved oxygen in the flask with algae will be higher in the light, but lower in the dark.
D. The dissolved oxygen in the flask with algae will always be lower.
E. The dissolved oxygen in the flask with algae will be higher in the light, but the same in the dark.
The option that correctly describes the relative dissolved oxygen concentration in the flask with algae will compare to the control flask is C. The dissolved oxygen in the flask with algae will be higher in the light but lower in the dark.
What factors can increase the amount of dissolved oxygen in water? Temperature, pressure, salinity and biological organisms are the major contributing factors that affect dissolved oxygen. If the medium contains a photosynthetic plant that too in the presence of light, then this will increase the dissolved oxygen. On the other hand, increased salinity and warm water decrease the amount of oxygen dissolved in water. As given above, the flasks containing the green algae and water are given 12 hours of light and then put 12 hours in darkness. The flask that contains the algae contains more dissolved oxygen during the light hours as algae are photosynthesis in nature and thus, they will do photosynthesis during 12 hours of lighting. But, the control flask contains only water and thus, there will be no addition of dissolved oxygen.Thus, we can conclude that flask that contains algae have more amount of oxygen dissolved than the control flask containing only water. During 12 hours of darkness, no photosynthesis occurs and hence algae containing flask will have a lower amount of dissolved oxygen.
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Which of the following is an example of genetic discrimination?
Polar Easterlies are winds that form at the ___ and the blow east to west
A.poles
B.west
C.east
D.equator
Answer:east
Explanation:
Polar easterlies are dry, cold prevailing winds that blow from the east. They emanate from the polar highs, areas of high pressure around the North and South Poles. Polar easterlies flow to low-pressure areas in sub-polar regions. Westerlies are prevailing winds that blow from the west at midlatitudes
what would be a great research topic? related to biology.
Finding good research topics related to traditional biology subfields like animal and plant biology, ecology (current global problems warrant a number of hot topics), or topics related to humans: neurobiology (and determinants of human behavior), recent discoveries on diseases and the immune system, Animal health!
3. In most cells,
directs the production of a
which then enters a ribosome. The
molecule of
ribosome produces the final product,
Retroviruses do the opposite. They use the enzyme reverse
transcriptase to use a template of
to produce
Answer:
In most cells, DNA directs the production of a molecule of mRNA which then enters a ribosome. The ribosome produces the final product, a protein. Retroviruses do the opposite. They use the enzyme reverse transcriptase to use a template of mRNA to produce DNA.
Explanation:
The central dogma of molecular biology describes how a cell uses its genetic information to synthesize a protein. The first step called 'transcription' consists of using an RNA polymerase enzyme and a fragment of DNA (i.e., gene) as a template to synthesize an RNA molecule, usually a messenger RNA (mRNA). Subsequently, the genetic code in the mRNA sequence is read by the ribosomes in order to produce a protein, a process known as 'translation'. Retroviruses are viruses that have the ability to integrate into the host genome by using a reverse transcriptase enzyme that allows reverse transcription of mRNA to complementary DNA, which then integrates into the host's genome.
The correct options in the blanks are DNA, mRNA, Protein, mRNA, and DNA respectively.
What is gene expression?It is the process by which cells produce protein from DNA molecules. DNA produces RNA which contains codes to produce amino acids.
The mRNA enters the ribosome which produced protein using the codons of mRNA.
Retroviruses have special machinery to produce the DNA from mRNA.
Therefore, the correct options in the blanks are DNA, mRNA, Protein, mRNA, and DNA respectively.
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how does the soil environment support the earthworm in the students hand
how does a change in speed cause a wave to change direction
Answer:
Refraction is an effect that occurs when a light wave, incident at an angle away from the normal, passes a boundary from one medium into another in which there is a change in velocity of the light. ... The wavelength decreases as the light enters the medium and the light wave changes direction.
Which best summarizes the article? achieve 3000 New Life at. Yellowstone
A. New life has appeared in Yellowstone 20 years after wildfires scorched the park
B. Wildfires burned 1375 square miles (4 856 square kilometers) in and around Yellowstone Park in 1988
C. Oficials in Yellowstone re examined a policy that allowed wildfires in the park
D. Drought once dried out trees in Yellowstone and helped fires spread out of control
Which method would be best suited for neutralizing the acidic components of waste?
a. Incineration Incineration
b. Discharge to sewers, streams, and rivers Discharge to sewers, streams, and rivers
c. Chemical treatment Chemical treatment
d. Biological treatment
Answer: The method best suited for neutralising the acidic components of waste is chemical treatment. Option C.
Explanation:
Chemical wastes are seen during industrial processes. These wastes include: acids, alkalis, organic solvents, detergents, oils, dyes and heavy metals ( example; mercury, copper and lead). Normally, these wastes should be treated and made harmless before they are emptied into the rivers, lakes and seas. If not treated, the effect of these chemicals on the aquatic ecosystems is extremely harmful.
CHEMICAL TREATMENT of waste is a procedure which is carried out on dangerous acidic waste products to change its chemical properties by neutralisation with basic solutions. Neutralisation is a chemical reaction between a base and an acid. The products formed are salt and water which are less harmful to the ecosystem.
The ACIDIC components of the chemical wastes should be neutralised with an appropriate base solution before disposal to avoid it's harmful effects on the aquatic ecosystems. This is because most chemical wastes are non- biodegradable.
6. Which of the following is a nonmetal?
a. Fe
b. AI
C. N
d. Si
Answer:
C nitrogen!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1. FIG 1 shows four organisms which belong to the class Myriapoda
(し
C
A
B
(a) Name the phylum to which the class Myriapoda belongs. State two reasons for your answer
[3]
(b) Give the names of organism A and D.A.
D..........
[2]
(c) Differentiate between A and Din terms of structure
.. [3]
2. FIG 2 shows four different organisms
Answer:
sry can't amswer
sry sry
Honest answers please!! Which organisms' decline may reduce the curlew population? (1 point)
trees
O milkweed
O grasshoppers
O livestock
Answer:
Milkweed
Explanation:
Several species of milkweed are poisonous to range animals.
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The curlew population will be reduced by milkweed because some species of milkweed are poisonous to curlew.
What is a population?A population is the total number of a species of organisms found in a particular habitat.
The population of organisms is affected by availability of:
food water matesas well as diseasesMilkweed is a plant specie.
The curlew population will be reduced by milkweed because some species of milkweed are poisonous to curlew.
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Starting with the European settlers, humans have introduced earthworms from Europe and Asia into North American forests. These introductions continue through the transport of soil that contains non-native earthworms, such as during construction and through the release of non-native earthworms used for fishing. The effects of non-native earthworms are especially large in forests that did not have any native earthworms. For example, forests of the Great Lakes region did not previously have earthworms until humans introduced them. When non-native earthworms are introduced, the thick layer of leaf litter disappears quickly, thereby altering biogeochemical cycles. You conduct an experiment to compare the nitrogen cycle in soils with and without non-native earthworms. Predict the results of your experiment.
Answer:
The soils with earthworms will show a faster rate of ammonification
Explanation:
Originally, the nitrogen released by organisms when they die (or excrete waste products) is organic nitrogen, e.i., amino acids and nitrogenous bases in DNA. Ammonification is the property that decomposer organisms have to mineralize organic nitrogen in order to produce inorganic nitrogen in the form of ammonium (NH4+). In agroecosystems, earthworm activity can increase the ammonification rate. For example, Lumbricus terrestris is an invasive earthworm (which is native to Europe) that has been shown to increase both ammonification and nitrification (nitrate production) rates in the soil of different ecosystems.
A directional flow of electric charge
Answer:
The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction.
Conventionally, a positive charge would go in the same direction as an electric current. As a result, the battery's positive terminal receives less current in the external circuit than its negative counterpart. Actually, electrons would go in the reverse direction across the cables.
What is electric current ?A stream of charged particles, such as electrons or ions, traveling through an electrical conductor or a vacuum is known as an electric current. The net rate of electric charge flowing through a surface or into a control volume is how it is calculated.
The cell phone, trains, ships, refrigerator, and the motors in appliances like food processors all run on electricity. To be useful, electric energy must be converted into other forms of energy like heat, light, or mechanical.
Conventionally, a positive charge would go in the same direction as an electric current. As a result, the battery's positive terminal receives less current in the external circuit than its negative counterpart.
Thus, a positive charge would go in the same direction as an electric current.
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POSSIBLE POINIS: 5
Which of the following is the best example of a population with the terrarium ecosystem?
A
the grains of sand in the bottom of the jar
B
the air and the screen at the top of the jar
С
the paper tube and the water containers
D
the three crickets in the jar
Answer:
A
Explanation:
All of the following are true about thymine dimers EXCEPT: the type of repair that is done to fix them is called nucleotide excision repair they are caused by UV radiation damage that fuses thymines that are next to each other on the same strand individuals with xeroderma pigmentosa (XP) are unable to repair this type of DNA damage, leading to cancer cell development they are caused by UV radiation damage to thymines that are opposite each other on different DNA strands
Answer:
Option 4, they are caused by UV radiation damage to thymines that are opposite each other on different DNA strands
Explanation:
Thymine dimer is formed on adjacent thymine and hence they lie next to each other on the same strand. They do not lie on strand that are opposite of each other on different DNA strand.
Hence, option 4 is correct
Which factors affect natural selection?
Answer:
1)variation organsimes (within populations) exibit invidiual variation in appearence and behaviour
Explanation:
2) high rate of population growth
3) differential survival and reproduction
What cell is this ?
Answer:
Animal cell
Explanation:
Which of these climates is characterized by dense, lush vegetation, broadleaf plants, and high blodiversity?
A. Desert
B. Savanna
C Tundra
D. Rain forest
Answer: ITS AAAAAAAAAA
Explanation: A
3. What charge does the hydrogen atoms have in a molecule of water?
Answer: Opposite charges attract one another. The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond. This bond is very weak.
Answer:
Negative
Very small charge in water.
how would decerasing the time it takes you to run a certain distance affect your speed ?
It would mean you are moving faster than you already were.
motion
Easy if you run fast, you will get around faster, but if you crawl, then you'll be slower
Compare and contrast the outer core and the inner core. Mention 2 differences between the two cores.
Answer:
The outer core is colder than the inner core, and they are both inside the Earth. The inner core is the deepest layer of Earth's layers.
Explanation:
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:
The answer is D.
Explanation:
Only 11% of freshwater is in swamps, so option A is incorrect.
The groundwater on earth appears to be a fraction of the freshwater, so option B is incorrect.
We can see that only 3% of the Earth's water is freshwater, so option C is incorrect.
68.7% of Earth's freshwater is found in icecaps and glaciers, meaning it is the majority of Earth's freshwater. Therefore, option D is correct.
what are some examples of heart healthy fats?
Answer:
Omega-3 fatty acids can help lower triglycerides, a type of fat that clogs arteries. Monounsaturatedfatsincludecanola,olive, and peanut oils. Other good sources are olives, avocados, nuts, and nut butters. These fats can help lower "bad" (LDL) cholesterol and raise "good" (HDL) cholesterol.
Explanation:
My dad takes omegas because he has high cholestrail which that also helps with heart problems.
What can cause thermal expansion that results in a change in the density of ocean water?
a climate change
b freezing temperatures
c weathering and erosion
d addition of sediments
Answer:
Explanation:
B because Thermal expansion is caused when seawater expands because of the higher temperature of the water. Since the oceans absorb heat from the atmosphere, when the atmosphere becomes warmer so will the oceans. Warm seawater has a greater volume than cold seawater.
GIVING AWAY 18 POINTS PLEASE HELP ME ASAPPP!!!
Answer:a major ecosystem defined by distinctive geography and receiving uniform solar radiation and moisture
Explanation: