In the American Midwest, native seed crops goosefoot, sumpweed, and sunflowers were farmed about 6,000-1,000 yBP. These crops were used by early Amerindians as sources of food.
The native seed crops goosefoot, sumpweed, and sunflower were used by early Amerindian natives as food prior to the arrival of the squash, beans and maize from Mexico.
The sunflower is nowadays a worldwide extended crop used in intensive farming due to its high yield and high nutritional value.
The first domesticated plants in Illinois about 1800 years before Common Era include goosefoot (Chenopodium berlandieri) and sunflower (Helianthus annuus L.).
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A soil sample is 25 percent sand, 55 percent clay, and 20 percent silt. Use the following soil texture triangle to determine the type of soil present in this sample.
Clay
Silty loam
Sandy clay
Sandy clay loam
Answer:
Clay
Explanation:
Answer:
a: sample containing 30 percent sand, 35 percent clay, and 35 percent silt
Explanation:
How is space exploration important to the economy?
Explanation:
Space exploration thus supports innovation and economic prosperity by stimulating advances in science and technology, as well as motivating the global scientific and technological workforce, thus enlarging the sphere of human economic activity.
Skin is an epithelial tissue.give reason.
Answer:
well ik when people including myself use there hand witch is made out of skin as a tissue when they sneeze so there that's how we started this pandemic
Explanation:
Artificial Selection and the English Bulldog:
Part C: Take Notes In a separate location, take notes from the sources you have identified. The notes will provide details for your paper. While taking notes from texts and websites, use these reading strategies. In the space provided, write four pieces of information that you intend to use in your paper.
Answer: Cannot give answer because:
Explanation: The image is unreadable.
PLZ HURRY YALL
In transcription what makes mRNA molecule by attaching free floating rna nucleotides together ???
Answer:
An mRNA transcript is made by an enzyme called RNA polymerase II
Explanation:
You advise your pregnant friend to give her cat away becauseA. She could contract plague.B. She could give the cat tularemia.C. She could get toxoplasmosis.D. She could get listeriosis.E. You do not like cats and want to see your friend without one.Reset Selection
Answer:
c. she could get toxoplasmosis
Explanation:
she would be exposed to cat litter; cat litter usually carries those parasites that cause toxoplasmosis.
A hole in the skin causes platelets to
rush to the site and release a chemical
that releases more platelets. This is an
example of what type of mechanism?
Answer:
b number positive feedback
"A hole in the skin causes platelets to rush to the site and release a chemical that releases more platelets" is an example of a positive feedback mechanism. The correct option is B.
What is a positive feedback mechanism?A positive feedback mechanism is a technique of the body in which the body works or secretes something to the body that is needed more in the body, and it is secreted in the body out of league and number.
Platelets are present in the blood. They are spherical and are colorless and small. They help in blood clotting when there is a cut or bleeding, it prevents loss of blood by clotting the blood.
So, in the hole of the body, there will be blood loss, and releasing more platelets would help in blood clotting.
Thus, the correct option is B. positive feedback mechanism.
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What are the two kingdoms of prokayotic organism?
Answer: Bacteria and Archaea
Explanation:
come up with a question for an investigation that can be done at a forest preserve (make sure to include an independent and dependent variable) 15 pts
Answer: What are the most effective new chemical treatments of various invasive species?
Explanation:
independent variable: chemical treatments
dependent variable: the type of species
I might be wrong on the variables
Only 3% of the water on earth is fresh water, the kind we need for drinking and growing food. Of that 3% , how much is locked in ice caps, and permanent snow.
Answer:
2.5%
Explanation:
Sea corals live exclusively in the ocean and are radially symmetrical. They have microscopic stinging barbs that shoot out to immobilize their prey. This allows corals to hunt even while they are stuck to the ocean floor.
What animal phylum do corals belong in?
chordates
mollusks
cnidarians
annelids
Answer:
phylum Cnidaria
Corals, anemones and jellies are related and all classified in the phylum Cnidaria or “stinging needles.” The animals in this group are aquatic, possess stinging cells within their tissues and have a body plan characterized by radial symmetry, which allows all parts of their bodies to be equally receptive and ...
Explanation:
Answer:
A. chordates
Explanation:
Convert 63°F to degrees Celsius.
If necessary, round your answer to the nearest tenth of a degree.
Here are the formulas.
5
9
9
F=-C+32
5
c=E(F-32)
+
Answer:
C = 5/9(F - 32)
C = 35
35 = 5/9(F-32)
35 * 9/5 = (F-32)
(F-32) = 63
F = 63 + 32 = 95
How does meiosis most benefit a species?
It decreases the number of chromosomes.
It increases genetic variation.
It increases the number of chromosomes.
It increases mutations.
Answer:
It increases genetic variation.
Explanation:
Meiosis does not decrease the number of chromosomes nor increase the number of them, it merely splits them.
While it could increase mutations, this might not necesarily be a good thing.
However, it does increase genetic variation, especially during the process where crossing over occurs. Increased genetic variation is beneficial for the population for many reasons like higher resistance to certain diseases. Increasing genetic variation also makes a species look unique from other members of the species.
.Marcus has $15.00 to spend on fruit. He buys 3 mangoes and spends the rest of the money on grapes. The store charges $0.75 for each mango and $2.50 per pound for grapes
Answer:
Explanation:
after he spent money on mangoes it was a total of 12.75
so he bought like 5lb of grapes
Traditional antibiotics build immunity by exposing the memory cells of our body to inactive versions of viruses or bacteria.
True
False
Conventional antibiotics increase immunity by exposing our bodies' memory cells to dormant viruses or bacteria. So, the aforementioned is True.
What are Antibiotics?A particular class of antimicrobial agent that works against bacteria is an antibiotic. Antibiotic drugs are frequently used for the treatment and control of bacterial infections because they are the most effective type of effective antibacterial for doing so. Bacteria may be killed or have their growth suppressed.
Several types of bacterial infections are treated or prevented with the help of antibiotics. They either eradicate bacteria or stop them from proliferating and spreading.
Viral infections cannot be treated with antibiotics. This covers the typical cold, the flu, the majority of coughs, and sore throats. By introducing our bodies' immunological memory to latent viruses or bacteria, traditional antibiotics boost immunity.
Therefore, the given statement is True.
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the enteric nervous system is a network of neurons found throuout the wall of thoracic orgsns such as the lungs. true or flase
Answer and Explanation: The answer is false, as it is a network of neurons, however it is embedded in the wall of the gastrointesinal system.
plz help 50 points
the question is in the screenshot
Answer:
4/16
4/16
4/16
4/16
Explanation:
Late, i know sorry the other guy is 100% wrong this is correct hope it helps someone or anyone
The Changing Forms of Carbon
In this activity, you will describe and apply what you just learned about the carbon cycle. You will examine the
picture below and then write two paragraphs that describe the process and changing forms of carbon.
Global Carbon Cycle
Wo.com
Atmosphere
Tour
750
Soil Respiration
Docomposition Photosynthesis
58
120
Burning
Plant
Fossil
Respiration
Fuels
59
Deforestation
and Land Use
Change
1.1
Ocean
Loss
Ocean
Uploke
90
7.7
92
IL
Plants
560
Litterfall
59
Rivers
0,8
Soils
Fossil Fuels
5,000 -10,000
1,500
Earth's Crust
100,000,000
Surface Ocean 725
Intermediate and
Deep Ocean 37,275 Pg
0.01
Borial to Sediments
Carbon is found in different forms on the Earth. It is found as carbon dioxide in the atmosphere, as carbonate and bicarbonate salts in various minerals, as well as it occurs in the elemental form of diamonds and graphite. All biotic factors are based on carbon-containing molecules like carbohydrates, proteins, fats, nucleic acids and vitamins. Carbon is incorporated into life-forms through photosynthesis which is performed in the presence of sunlight by all life-forms that contain chlorophyll. Photosynthesis converts CO2 from the atmosphere or dissolved in water into glucose molecules. These molecules are either converted into other substances or used to provide energy for the synthesis of other biologically important molecules.
The use of glucose to provide energy to living things involved the process of respiration in which oxygen may or may not be used to convert glucose back into CO2. This CO2 goes back into the atmosphere again. The process of combustion also adds to the level of carbon dioxide in the atmosphere. This percentage is said to have increased when human beings started cutting down trees, burning fossil fuels, etc. on a very large scale. Thus, carbon is cycled repeatedly through different forms by the various physical and biological activities and this cycle is therefore called carbon cycle.
Hope you could get an idea from here.
Doubt clarification - use comment section.
Carbon cycle is a biogeochemical cycle in which the carbon atom continously moves in the atmosphere through different forms and processes.
What is Carbon cycle?The carbon cycle is the biogeochemical cycle which describes the process through which carbon atoms continually travel from the atmosphere to back to the Earth and then back into the atmosphere. This cycle goes on repeatedly. Since our planet and its atmosphere forms a closed environment, the amount of carbon in this system does not change, it only transforms from one form to another.
The processes which takes place in carbon cycle include photosynthesis, decomposition, respiration, and combustion. Carbon cycles from the atmosphere into the plants and living things. For example, carbon is a pollutant in the atmosphere which is present as carbon dioxide gas.
Carbon moves from the plants and animals to soil. When the plants and animals die, their bodies, wood, and leaves decays which being carbon into the ground. Some of this carbon is buried and become fossil fuels in millions of years. Carbon moves from living things to the atmosphere through respiration in which they inhale oxygen gas and exhale carbon dioxide gas.
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How do index fossils help scientists?
Fossils are used to determine the ages of rock layers. ... Index fossils are of organisms that lived over a wide area. They lived for a fairly short period of time. An index fossil allows a scientist to determine the age of the rock it is in.
The core of the immune system is made up of
red blood cells.
platelets.
white blood cells.
intact skin.
intact mucus membranes.
Answer:
red blood cells
Explanation:
white blood cells are used for fighting against diseases
What happens during a penumbral lunar eclipse?
Answer: A penumbral lunar eclipse occurs when the Sun, Earth, and the Moon are imperfectly aligned.
Explanation: During this occurance the Earth comes between the Sun and moon and blocks the sunlight from falling on the moon.
Tastes associated with caffeine, quinine, or aspirin are detected primarily by ________ taste receptors.
Tastes associated with caffeine, quinine, or aspirin are detected primarily
by bitter taste receptors.
These receptors can either be TAS2Rs or T2Rs and they help to protect
against harmful food substances. They are also responsible in the
stimulation of hormones which increases hunger.
Bitter taste receptors are found in the oral cavity and stomach and it is the
receptor which bind to more than fifty percent of all the drugs
manufactured.
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PLEASE HELP!!! 63 points.
Use the molecular structures to predict which of the six solutions will test positive for glucose. Write your prediction in the answer space. Provide the reasoning behind your prediction.
Answer:
need the picture
Explanation:
how many times do I have to repeat myself -_-
if you add 63 points each person will only get 32 points so add 63x2 instead anyways I cannot solve the answer without a picture :/
can someone please help me on this all u have to do is search up on the internet and then put down 4 facts that are mentioned in the web site and give the main idea to but make sure I know were the main idea is
web site: The de-extinction of the woolly mammoth would be an evolutionary mistake
1:As of recently, the essential contention for species de-termination was that it offered humankind an opportunity to make up for itself for the wrongs submitted north of millennia. People, one could really guarantee, have been messing up the planet since days of yore. Thus, a large number of the species that have been the objectives of de-termination endeavors have been picked on the grounds that they appear to have some essential thing right to make due. Frequently, they look similar as species that have made due until the present time. Assuming it hadn't been for people meddling with their normal natural surroundings and sensitive environments, the contention goes, they would have been prospering today.:2To get around this contention, however, a few researchers are beginning to put forth the defense that it wasn't Mother Nature who did in the wooly mammoth — it was people. When the planet began to defrost, people came into contact with the wooly mammoth in more prominent numbers, and started to chase them savagely after their meat, bones and even skin. It's basically the traveler pigeon proposal, stretched out to the wooly mammoth. De-eradication fans will most likely let you know that people bear a sort of transformative responsibility for having cleared out the wooly mammoth, quit worrying about environmental change.:3creating a highly-controlled environment (i.e. a theme park) where the wooly mammoth could conceivably flourish – it doesn’t reason that you can simply hit the “rewind” button on evolution. As some conservationists are already warning, bringing back a species like the wooly mammoth could lead to the disappearance of other species who share similar habitats. Once you bring back a new species, you have to start thinking about ecosystem effects — and about Butterfly Effects. Bringing back the wooly mammoth would require massive changes to existing ecosystems.:4Yet, that equivalent contention – an opportunity to reclaim human bad behaviors over an improper annihilation – doesn't hold on account of the wooly mammoth. The wooly mammoth, with its monstrous hair coat to save warmth, had no way for endurance once the Ice Age finished. As Darwin originally guessed, advancement resembles a calculation followed commonly. In the event that a variation assists an animal varieties with getting by and thrive, the transformation will stick. Assuming it doesn't, it will ultimately vanish from the genetic stock. For better or for more regrettable, certain species will go terminated when they can presently don't adjust to their current circumstance. It wasn't only that wooly mammoths had substantial hair coats – they had a wide range of different variations that assisted them with flourishing during the Ice Age, as enormous tusks to clean up snow and ice. Bringing back the wooly mammoth would be commensurate to bringing back an animal types that had the right to go terminated. : main idea Accepting totally effective cloning to make sound creatures, the cloned wooly mammoths would in all likelihood have hopeless existences and couldn't have ever evident freedomWhat's more not just the productive restoration of the wooly mammoth, but it's full rewilding into the Arctic." Bringing species like the wooly mammoth back into the frosty might perhaps help deferred down non-renewable energy source side-effects in the area and help with restoring lost organic frameworks, Lamm said.But think about how conceivable it is that they somehow made due. Our Arctic regions would look an incredible arrangement changed, and not because there would be huge assessed, shaggy animals meandering around. There would be less elk, moose, and caribou considering the way that the wooly mammoth would out battle them for food.Assuming absolutely viable cloning to make sound animals, the cloned wooly mammoths would probably have miserable presences and couldn't have ever clear freedomLamm said expecting the association is productive, research has shown bringing back ended species could reshape the Siberian tundra and in other Arctic regions to be more specialist of the normal game plan of the Arctic glades when it was an unrivaled carbon-sequestering areaLamm said assuming the organization is effective, research has shown bringing back wiped out species could reshape the Siberian tundra and in other Arctic districts to be more agent of the biological arrangement of the Arctic fields when it was a superior carbon-sequestering location.But imagine a scenario in which they some way or another made due. Our Arctic locales would look a ton changed, and not on the grounds that there would be enormous measured, shaggy creatures meandering around. There would be less elk, moose, and caribou in light of the fact that the wooly mammoth would out contend them for food.
A change in the sequence of bases in a DNA molecule is know as
Answer:
A point mutation is a change in the base sequence of a DNA molecule.
Explanation:
What are the four types of physical hazards?
Select the 4 answer options that apply.
Extreme Temperature
Radiation
Vibration
Noise
Pathogens
Corrosive substances
Answer:
1st 4 are the physcal hazards
Explanation:
a)
b)
c)
d)
The four types of physical hazards are Extreme Temperature, Radiation, Vibration and Noise.
What are Physical Hazards?A physical hazard is an agent, factor or circumstance that can cause harm with contact. They can be classified as type of occupational hazard or environmental hazard.
Physical hazards include ergonomic hazards, radiation, heat and cold stress, vibration hazards, and noise hazards.
Whereas, Corrosive substances comes into chemical hazards and Pathogens can be classified as biological hazards.
Thus, the Extreme Temperature, Radiation, Vibration and Noise are the best four options as the type of physical hazards.
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If we have 46 chromosomes, about how many feet would that be? (Show some math work)
Answer:
276
Explanation:
Chromosomes are about 6 feet long.
46 x 6
= 276
how is biomimicry is used in companies help
Answer:
Looking to nature for inspiration can help individual designers in multiple ways. Designers are innately curious, and biomimicry provides the opportunity to learn about life's water, energy and material-use strategies. This perspective broadens the design space to bring new solutions to the table.
Explanation:
please mark my answer in brainlist plz
___ help the flow of blood from atrium to ventricle. HELPPP
Answer:
the two atrioventricular valves
What is the function of the
vacuole in plant cells
A. Controls cells activity
B. Stores water and nutrients
C. Produces energy for the cell
D. Removes waste from the cell
Answer:
B. Stores water and nutrients
Explanation: