Answer:
30 feet (about 9 meters) long in an adult.
Explanation:
The alimentary canal is the long tube of organs — including the esophagus, stomach, and intestines — that runs from the mouth to the anus. An adult's digestive tract is about 30 feet (about 9 meters) long. Digestion begins in the mouth, well before food reaches the stomach.
Ultraviolet radiation is an example of a(n)
Ultraviolet radiation is an example of a carcinogen because it is a agent that causes cancer.
What is a carcinogen?A carcinogen is any agent (either physical or chemical) capable of causing cancer in normal cells.
Ultraviolet radiation is a physical carcinogen agent that leads to mutations in DNA and thus causes cancer.
In conclusion, Ultraviolet radiation is an example of a carcinogen because it is a agent that causes cancer.
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The ultraviolet wave is an example of the electromagnetic waves.
What is ultraviolet radiation?The term ultraviolet radiation has to do with a wave which a part of the electromagnetic spectrum. The electromagnetic spectrum does not require a medium of propagation.
Hence, the ultraviolet wave is an example of the electromagnetic waves.
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Name the type of circulatory system found in the phylum Arthropoda
Answer:
Open circulatory system
Explanation:
An open circulatory system, found in arthropods, pumps blood into a cavity called a hemocoel where it surrounds the organs and then returns to the heart(s) through ostia (openings). The blood found in arthropods, a mix of blood and interstitial fluid, is called hemolymph.Arthropods have an open circulatory system. In an open circulatory system, blood isn't transported in the body through veins and arteries; it flows freely within body cavities and makes direct contact with the organism's internal tissues and organs! Most arthropods that live in the water have gills.
Hope this helped!!!
Using the following words, explain the difference between
DNA and RNA.
Nucleus, uracil, double helix
which cell structures are attached to the surface of the rough ER that allow it to make proteins?
Answer:
Ribosomes
Explanation:
Rough ER looks "rough" because they are studded with ribosomes. Ribosomes are the main players making the protein. They eject the protein inside the lumen (inner side) of Rough Er for modifications.
A pond with plenty of water but few organisms begins to
dry up.
Which series best describes the order of changes that will occur as the pond
dries up?
A. Shallow pond → Forest Meadow
Bog
B. Forest Meadow
Bog → Shallow pond
C. Shallow pond
-
Bog → Meadow Forest
D. Bog
→ Shallow pond → Meadow → Forest
Answer:
Its Shallow Pond to Bog to Meadow to Forest
Explanation:
Just did the test and got it right. It makes sense if you think about it
Abiotic factors of an environment are all the living components.
True or False
Compare the plant cell system vs the plant organ system. Plant Cell. Plant Organ System. 1. Nucleus. 1. Shoot system (Leaves, buds, stems, flowers, fruit) 2. Chloroplasts. 2. Root system 3. Cell wall 4. Mitochondria 5. Large vacuole 6. Cytoplasm
Answer:
Comparison is given below.
Explanation:
Nucleus controls and regulates the activities of the cell such as growth. Shoot system is the part of plant body present above the soil. The main function of shoot system is the production of food in the process of photosynthesis. Chloroplast is the where photosynthesis occurs. Root system is present inside the soil that is responsible for the absorption of water and nutrients from the soil. Cell wall is the boundary of cell whereas mitochondria is the powerhouse of the cell because energy for the cell is produced here. Large vacuole is the organelle that is responsible for the storage and waste disposal. Cytoplasm is the liquid medium in which the organelles are present in or over the surface.
What are some causes of water pollution?
Answer:
Dumping of pollutants in water, and to b honest, that's the only one I can think of.
Why do you think the caterpillar and butterfly are so brightly colored?
Answer:
Explanation:
Butterflies with bright colors and patterns are advertising to predators that they are distasteful. There are also butterflies and moths that are very brightly colored that are mimicking a species that is bad-tasting in hopes of fooling its predators.
can someone help me please
Answer:
I think it's the second one. Binomial Nomenclature
Why does a horse do not have a opposable thumb
Answer:
so it would be able to gallop
Which two viral characteristics provide evidence to support the
argument that viruses are more similar to living components than to
nonliving components of an ecosystem?
Living Characteristics of Viruses Nonliving Characteristics of Viruses They reproduce at a fantastic rate but only in living host cells. They can mutate. They are acellular that is they contain no cytoplasm or cellular organelles. They carry out no metabolism on their own and must replicate using the host cell's metabolic machinery.
A specific location in America has closed down several fossil fuel units and set up geothermal plants. In your own words, explain how this would affect the economy of the location. (5 points)
Answer:
The economy of the location would be affected in the following ways:
1. Setting up geothermal plants would create more Jobs as expertise in various fields would be required to render their services.
2. Setting up geothermal plants would increase more revenue generation for the government in taxes.
3. Setting up geothermal plants would attract the development of the location as more people would tend to live there, there would also be improved road networks, housing, e.t.c.
4. Closing down fossil fuel units would eradicate environmental pollution in terms of oil spillage and stop the reduction that has been ravaging agricultural activities due to contamination of water bodies and land as a result of the fossil fuel.
Explanation:
Geothermal power plants are expensive but renewable sources of electricity that use steam or hot water pumped to the Earth's surface from beneath the earth's crust to spin a turbine producing electricity.
1. A standard laboratory technique used to produce a new plant is
represented in the diagram below. This technique is best identified as
BB
Cell
division 3.0.320) Cell division
Cell
One leaf cell
spocialization
removed
One
Colls grown in a
laboratory
New tomato plant
Tomato plant
O (1) gene alteration
O (2) selective breeding
(3) replication
(4) cloning
Prior to seed head emergence or at the optimum stage for best quality forage. The 4 uppermost leaf blades. Prior to bloom: Mature leaf blades taken about 1/3 of the way down from the top of the plant
Which type of transport requires the added energy of ATP?
A. active
B. passive
Answer: A. active
Explanation:
Answer:
(A)Active Transport
Explanation:
Active transport
During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP).
hope this helps :)
can somone help me plzzzzzzzzzzzzz
Answer:
[tex]\huge \fbox \pink {A}\huge \fbox \green {n}\huge \fbox \blue {s}\huge \fbox \red {w}\huge \fbox \purple {e}\huge \fbox \orange {r}[/tex]
[tex] \huge\red{ \mid{ \underline{ \overline{ \tt Fe }} \mid}}[/tex]
→ Molar Mas = 55.85 g/mol
[tex] \huge\orange{ \mid{ \underline{ \overline{ \tt NaCl }} \mid}}[/tex]
→ Molar Mass = 58.44 g/mol
[tex] \huge\red{ \mid{ \underline{ \overline{ \tt CH₄ }} \mid}}[/tex]
→ Molar Mass = 16.02 g/mol
[tex] \huge\orange{ \mid{ \underline{ \overline{ \tt Ca(OH)₂ }} \mid}}[/tex]
→ Molar Mass = 74.10 g/mol
ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
[tex] \huge\blue{ \mid{ \underline{ \overline{ \tt ꧁❣ ʀᴀɪɴʙᴏᴡˢᵃˡᵗ2²2² ࿐ }} \mid}}[/tex]
Answer:
Fe -> 55.85g/mol
NaCl-> 58.44g/mol
CH₄->16.02g/mol
Ca(OH)₂->74.10g/mol
Explanation:
NaCl = 22.990 + 35.45 = 58.44g/mol
CH₄ = 12.011 + (1.008 × 4) = 16.043 g/mol
Ca(OH)₂ = 40.078 + 2(15.999 + 1.008) = 74.092 g/mol
PLEASE HELP ASAP
Which of the following best explains why animals that inhabit warmer regions tend to have smaller body sizes?
A higher surface-area-to-volume ratio facilitates heat loss.
Animals in warmer climates need to move more quickly to catch prey.
More species inhabit warm climates, and smaller size enables a greater number to live in the same ecosystem.
Smaller body size enables faster reproduction and repopulation to maintain a niche in overpopulated warmer climates.
Answer:
I believe it may be a higher surface area to volume ratio facilitates heat loss
Explanation:
Out of the options it makes the most sense being that larger animals keep heat in...
Globalization of the economy is increasing because of which of these
factors?
A. Agreements limiting immigration
B. Advances in internet technology
C. A decrease in demand for resources
D. Treaties limiting international trade
Answer:
Explanation:
B. Advances in internet technology - it allows ppl to order stuff from all over the world.
The globalization of the economy is increasing due to the reduction in the demand for resources. So, the correct option is C.
What is Globalization?Globalization is defined as the process by which people and goods move easily across borders which is an economic concept which is the integration of markets, trade and investment with the aim of slowing the flow of products and services between nations where there are some constraints.
The effect of globalization is that it promotes increased interaction between different regions and populations around the world. The globalization of the economy is increasing due to the reduction in the demand for resources.
There are three types of globalization.
Economic globalizationPolitical globalizationCultural globalizationTherefore, the correct option is C.
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Which of the following is TRUE about sedimentary rock?
A. does not contain layers
B. May contain fossils
C. the hardest of the rock types
Answer:
B
Explanation:
Sedimentary rock is layered. That makes A wrong, but it leads to another observation.
Things can die and think sink to the bottom of an ocean or sea or river or lake bed which over time changes. So you might find fossils which is the answer.
C is incorrect because there are much harder substances than sedimentary rock.
Answer:
B.May contain fossil.
Explanation:
These rocks are formed with the deposition of materials broken down from pre-existing rocks, followed by compaction and cementation
Describe the three factors required for natural selection to occur in a population.
Answer:
Isolation,adaption,overpopulation
Natural selection is based on three principles which are as follows:
1. Hereditary/ inheritance
2. Competition
3. Differentiation
What is Natural selection?
Natural selection, is defined as the differential survival and reproduction of individuals due to differences in phenotype, is the dominant mechanism of evolution which is the change in the genetic properties of populations over generations.
Natural selection is based on three principles that most traits are inherited which is called heredity, more children are born that can survive which is called competition, and children with more desirable characteristics will survive and produce more offspring which is called differentiation.
Thus, Natural selection is based on three principles which are as follows:
1. Hereditary/ inheritance
2. Competition
3. Differentiation
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Explain how an increase in atmospheric CO2 may lead to a rise in sea level?
why does the oceanic crust continuously subduct
Answer:
When an oceanic plate converges with a continental plate, the oceanic crust will always subduct under the continental crust. As the oceanic crust is naturally denser, this melting leads to heat being transferred upwards and uplifting the crust, eventually developing into a volcano.
Which unit is used to measure the forces that act on objects?
1.meter
2.kilogram
3.newton
Plzzzz someone help
Answer:
Newtons
Explanation:
what is called bio pesticides ?
Answer:
hope it helps uh ❤❤ and plzz mark me as brainlist❤❤What are the major sources of evidence for evolution how does each support the theory of evolution?
Answer:
DNA is one of the major sources might be wrong tho
Explanation:
DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are. Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.
Help me? I don’t really know how to do this stuff, so please help me?
humans developed antibiotics to fight bacterial infections however some antibiotics are no longer effective in killing the bacteria than once killed how does the theory of evolution explain this antibiotic mutated the bacteria which allowed resistance develop
Answer:
Changes in genetic makeup occurs with the passage of time.
Explanation:
Antibiotic cause mutation in the bacteria which allowed to develop resistance in the bacteria. This resistance and change in the genetic makeup obeys the theory of evolution which states that all species are changed gradually with the passage of time. The genetic makeup of bacteria also changes with the passage of time and attain resistance due to regular application of antibiotics so due to this resistance, the antibiotic can't work on the bacteria.
Drought, erosion, flood, and long heat spells are examples of - O populations O abiotic changes within an ecosystem which can affect biotic factors. biotic factors within an ecosystem which affect abiotic components. o communities
Answer:
The answer is Abiotic
Explanation:
Abiotic are non living things
The diagram below shows the chromosomes from a cell after they were photographed
under a microscope. Which of the following questions may best be answered by
studying an organism's chromosomes?
a. How does the organism obtain its food?
b. What sex is the organism?
c. Is the organism endangered?
d. Where is the organism's ecosystem?
Which combination of factors will produce the highest rate of population
growth?
a. high life expectancy and high infant mortality
b. low life expectancy and low infant mortality
c. low life expectancy and high infant mortality
d. high life expectancy and low infant mortality
Answer:
high life expectancy and high infant mortality