When looking at the carbon isotopes present in the atmosphere, scientists determined that 13C and 14C levels have decreased over time. What did researchers conclude from these observations?
A. volcanic activity is responsible for increased atmospheric CO2
B. the burning of forests is responsible for increased atmospheric CO2
C. the use of fossil fuels is responsible for increased atmospheric CO2
D. increased plant/animal respiration is responsible for increased atmospheric CO2
Answers
Scientists determined that 13C and 14C levels have decreased over time. researchers from these observations concluded that C. the use of fossil fuels is responsible for increased atmospheric CO2.
Due to the Suess effect, the delta 13C in atmospheric CO2 gradually decreased while a significant amount of anthropogenic CO2 from fossil fuel combustion and deforestation has been released into the atmosphere since the industrial revolution.
Suess impact: Because they originated from living things, fossil fuels also deplete in 13C relative to the atmosphere. As a result, compared to atmospheric carbon dioxide, the carbon from fossil fuels that is returned to the atmosphere through combustion is depleted in both 13C and 14C.
Know more about combustion here: https://brainly.com/question/15117038
#SPJ4
Related Questions
Most articles pass right through the atom, this means that most of the atom is
Answers
Most articles pass right through the atom, this means that most of the atom is an empty space.
What is an atom?An atom is described as a particle that consists of a nucleus of protons and neutrons surrounded by a cloud of electrons.
Protons and neutrons make up the core nucleus of an atom, which is encircled by an electron cloud. In relation to the size of the atom as a whole, the nucleus is exceedingly small.
As a result, the electrons surrounding the nucleus are the primary target of interactions when particles or even light pass through an atom. The majority of the atom's remaining space, which includes the nucleus, is vacant.
Learn more about atoms at:
https://brainly.com/question/6258301
#SPJ1
Which word best describes both texts I will mark brainiest
Answers
Answer:
Informative
Explanation:
Both texts provide information about mucus and its importance to the human body, as well as its origin.
Early scientists were conflicted about the mechanism by which cells were created, with some scientists holding the viewpoint that cells were spontaneously crystallized in what was known as free cell formation. Robert Remak discovered ways to fix and observe cell membranes in various stages of cell division. These findings led Rudolf Virchow to proclaim in 1855, Omnis cellula e cellula (every cell comes from another cell), thus completing the tenets of cell theory.
Answers
Answer: All cells come from preexisting cells.
Explanation:
The given paragraph is about cells develop from the preexisting cells. The doubling of the genetic material in the S-phase is the triggering mechanism for cell division. In the process of mitosis the genetic material get reduced. The daughter cells vary by the amount of genetic material they receive. This proves that the new cells form from the pre-existing cells.
What is the reason for the phase of no response immune depending on the of administre antigens With the explanation and analysis of the curve stage by stage please help me
Answers
The reason for the phase of no response is due to the time it takes for the immune system to recognize and respond to an antigen. When an antigen enters the body, it must be recognized and processed by immune cells before the body can mount an immune response. This recognition process can take time, particularly if the immune system has not encountered the antigen before.
During the phase of no response, the immune system is still actively processing and recognizing the antigen, but it has not yet produced an immune response. Once the immune system has recognized the antigen and developed a response, subsequent exposures to the antigen will elicit a more rapid and robust immune response due to the immune system's memory of the previous exposure.
The immune response to an antigen can be measured over time using an immune response curve. This curve typically shows a period of no response, followed by an initial response, and then a subsequent increase in response over time.
In the initial phase, there is a low level of immune response as the immune system begins to recognize and respond to the antigen. As the immune response develops, the level of response increases, reaching a peak at some point before eventually declining.
The shape and duration of the immune response curve can vary depending on the type and dose of antigen, the route of administration, and other factors. However, the initial phase of no response is a common feature of the immune response to new or novel antigens.
In summary, the phase of no response in the immune system occurs due to the time it takes for the immune system to recognize and process a new or novel antigen. This phase is typically followed by an initial response and subsequent increases in response over time. The immune response curve can provide insight into the nature of the immune response to an antigen, including the duration and magnitude of the response.
Please brainliest to support
Who might benefit from this claim?
A. people who have a fast metabolism
B. stores that sell exercise equipment
C. people who take vitamin supplements
D. grocery stores that sell legumes
Answers
The people that might benefit from the claim is grocery stores that sell legumes.
What is claim?A claim can be defined as a cause of action or right of action, usually a set of facts sufficient to justify a cause of action or event.
From the given passage, incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours.
What is metabolism?Metabolism is chemical reactions in an organism that occur to sustain the life of the organism.
Thus, the people that might benefit from the claim is grocery stores that sell legumes.
The complete question is below:
Read the claim. Breakfast is an important meal. It jump starts the body's process of using calories to break down food. Appetite can decrease with age, but going too long without eating causes metabolism to slow down. Current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours. Who might benefit from this claim?
Learn more about Metabolism here: https://brainly.com/question/1490181
#SPJ1
Answer:d
Explanation:
Precipitation moving from higher to lower elevations on the ground is called___?
Answers
Answer:
Evaporation
Explanation:
Evaporation is the process in which percipitation moves higher to lower elavations on the ground. Evaporation is when the sun heats up and dries out the water causing it to rise up to the clouds which then causes rain for another time. ( I am not completely sure)
Jane Goodall has had major impacts in conservation, what are some organizations she has started,
and what do they do?
Answers
Some organizations Jane Goodall started was the Jane Goodall Institute which is an organization which encourages individuals to be agents of conservation.
What is Conservation?This is defined as the protection and preservation of the natural environment. It also involves their restoration so as to prevent the dying out and extinction of species in the ecosystem.
Conservation also results in the biodiversity of an ecosystem being increased which ideal because organisms have the various roles they perform in the environment.
Jane Goodall was an advocate for conservation which was why she created the Jane Goodall Institute which encourages people all over the world to be agents of change by participating in various projects which protects the environment.
Read more about Conservation here https://brainly.com/question/14840218
#SPJ1
Which step happens first in secondary succession?
Responses
Grasses, flowers, and mosses colonize the soil.
Bushes and shrubs return and create a shaded environment.
Bare rock is broken down by roots and lichen to form soil.
Seedlings grow into saplings and then taller trees.
Answers
Answer: Grasses, flowers, and mosses colonize the soil.
Explanation:
I took the test and got 5/5
Which statement best describes the effect that an increased amount of atmospheric carbon has on plants?
Plants will require less water to be absorbed.
Plants will decrease their rate of transpiration.
Plants will require more sugar to create energy.
Plants will increase their rate of photosynthesis.
Answers
i’m confused helpppp:)
Answers
Answer:
A
Explanation:
Answer:
B
Explanation:
I believe this is the answer.
what would happen if we could breath solids
Answers
Answer:
it may leads to exothermic process in your body and we can die
Answer: We would die
Explanation:
why do how are the different terms inter plants and animals
Answers
Answer: Plants need animals for seed dispersal and pollination. ... Some animals eat plants. Some animals eat other animals. When animals die and decompose, the plants use the nutrients that were deposited back into the soil from the decomposing organism.
Explanation:
Negative feedback is most like _____.
Answers
Answer: which analogy in your home or likely to cause disease
Explanation:
please please please help
Answers
Answer: 1) Answer is B 2) answer is B 3) answer is C
Explanation:
Construct a food chain using the following wildlife scenario.
In the north woods where the Gray wolf is the apex predator species, clover plants are the preferred forage of Cottontail rabbits. Rabbits are a critical prey species for wolves, especially young, adolescent wolves.
Answers
Answer:
Gray wolf->Rabbit->Clover plant
Explanation:
The wolf eats the rabbit and the rabbit eats the clover plants
The diagram of a well labelled matured fresh cat fish
Answers
A fish species that is a member of the Siluriformes phylum is the catfish. This diverse group contains many species of fish that live in freshwater habitats around the world.
The name "catfish" refers to the distinctive whisker-like barbels on catfish that are recognized for their appearance like the whiskers of a cat. Although catfish are found in a variety of shapes and sizes, they typically have long bodies, flat heads, and scaleless skin. They have strong dorsal and pectoral fins, which help them to swim and walk well. The diet of these fish, which are often bottom-dwelling, can include aquatic plants, insects, small fish, and even carrion.
Learn more about Catfish, here:
https://brainly.com/question/30431844
#SPJ1
Two fruit flies that are heterozygous for body color
and eye color are crossed. Brown body color is
dominant to black body color. Red eye color is
dominant to brown eye color.
Use the Punnett square to determine the ratio of
offspring with the described trait to the total
number of offspring:
Brown body and red eyes
Brown body and brown eyes
Black body and red eyes
Black body and brown eyes
Answers
Answer:
For both traits ( BrBl Rbx BrBl Rb) we would get a 9:3:3:1 phenotypic ratio.
9 Brown body, red eyes (both dominant traits)
3 brown body, brown eyes (one dominant, one recessive trait)
3 black body, red eyes ( one recessive and one dominant trait)
1 black body, brown eyes ( both recessive traits)
Explanation:
Answer:
Brown body and red eyes ⇒ 9 ⇒ 16
Brown body and brown eyes ⇒ 3 ⇒ 16
Black body and red eyes ⇒ 3 ⇒ 16
Black body and brown eyes ⇒ 1 ⇒ 16
what explanation accounts for the formation of sunspots?
Answers
Answer:
The curvature of the magnetic fields near the sun's equator creates pockets of the photosphere that aren't warmed by convection.
Explanation:
Hope it helps!
Answer: Curvature of magnetic fields.
Explanation:
The Amazon rainforest in South America is the largest rainforest ecosystem in the world. Ecuador's Yasuni National Park, which is in the Amazon rainforest, has many different species of plants, birds, and mammals.
Which statements describe the Yasuni National Park ecosystem? Select all that apply.
A) It has soil that is poor in nutrients
B) it has year-round rain and warm temperatures
C) it has many different types of organisms
Answers
Answer:
B & C, because the Amazon rainforest is warm and has rain all year. Also it has many different varieties of plants and animals. Since Yanuni National Park is in the Amazon rainforest, it would be the same.
Explanation:
Brainliest, Please! (And Happy Halloween!)
Answer:
b and c
Explanation:
because the Amazon rainforest is warm and has rain all year. Also it has many different varieties of plants and animals. Since Yanuni National Park is in the Amazon rainforest, it would be the same.
Brainliest, Please!
A surfer gets faster as he travels through a large wave. Are the forces on
the surfer balanced or unbalanced? How do you know?
2 - ATLET
Answers
Answer:
erm unbalanced?
Explanation:
i think its unbalanced because the surfer is getting faster so the force pushing him is stronger than the one pulling him
ASAP PLS HELP!!! WILL MARK AS BRAINLIEST + 50 points!
I need this chart filled out, attached the chart and my species i created.
PLS PLS PLS HELP!!! ASAP
Answers
The three traits and the possible phenotypes are:
eye color; blue, brownhair color; blonde, red, blackheight; tall, average, shortWhat are traits and phenotypes?An observable characteristic is simply referred to as a phenotype.
The term "pheno" and "phenomenon" share a common root, and "pheno" simply means "observe".
It can therefore refer to anything from a common trait like height or hair color, to the presence or absence of a disease. It is also an observable type of an organism.
Learn more about phenotypes at: https://brainly.com/question/21765541
#SPJ1
what is meant by budding
Answers
Answer:
Explanation:
Budding is a process of asexual reproduction. Budding is where a piece of the original organism gives birth to another part of it. A very good example of this is plants where they have buds and they grow from these buds.
A
В
с
Which container has the least concentration of solutes?
O A
OB
О с
OD
Answers
Answer:
c
Explanation:
its c i took the test
Which of the following is not a factor in determining where precipitation falls in California?
O topography
O salinity
O wind currents
Answers
I think its salinity because the other things have something to do with tracking precipitation
Using 2-3 sentences summarize what you investigated and observed in this lab.
Astronomers use a wide variety of technology to explore space and the electromagnetic spectrum; why do you believe it is essential to use many types of equipment when studying space?
If carbon was the most comment element found in the moons and planets what element is missing that would make them similar to earth? Explain why. (Hint: Think about the carbon cycle.)
We knows that the electromagnetic spectrum uses wavelengths and frequencies to determine a lot about outer space. How does it help us find out the makeup of stars?
Why might it be useful to determine the elements that a planet or moon is made up of?
Answers
1. Because different instruments and procedures are created to detect and investigate various phenomena, astronomers use a wide range of techniques to explore space. Each piece of technology provides different capabilities and insights into the universe.
2. If carbon were the most prevalent element on the Moon and planets, hydrogen would be the component that distinguishes them from Earth. The most abundant element in the universe, hydrogen is essential to the carbon cycle.
3. By examining the precise wavelengths and frequencies of light emitted or absorbed by stars, the electromagnetic spectrum aids our understanding of the structure of stars. Because each element emits or absorbs light at a particular wavelength, it has a distinct spectral fingerprint. Astronomers can determine the elements present in a star by examining the spectrum of the star's light.
4. There are various uses for knowing the elements that make up a planet or moon. First, it provides clues about the planet's history and formation. Different elements come from different sources and can explain how the planet formed through processes such as stellar nucleosynthesis or collisions with other celestial bodies. Second, the geology, atmosphere, and ability to support life on a planet are all affected by the elemental makeup.
Learn more about electromagnetic spectrum, here:
https://brainly.com/question/23727978
#SPJ1
Which organisms can reproduce using the process of fragmentation
Answers
Fragmentation is a form of asexual reproduction and is seen in annelids, fungi, cyanobacteria, sponges, and flatworms.
In Fragmentation, an organism divides itself into a number of fragments. It occurs when an organism completely breaks down independently irrespective of the other parts. Each one of these fragments matures into fully grown adults that are clones of the original organism.
Asexual reproduction usually involves the participation of a single parent alone can produce new offspring. The newly produced individual is genetically identical to one another and its parent. Both multicellular and unicellular organisms divide by fragmentation which is asexual reproduction.
Fragmentation is the most common method of reproduction in lower invertebrates. It is seen in many organisms including filamentous cyanobacteria, algae, lichens, molds, many plants, and animals such as flatworms, annelid worms, sponges, and sea stars.
Learn more about the fragmentation from the given link.
https://brainly.com/question/29633695
The organisms that can reproduce by fragmentation are Option d Sponges and Sea anemones.
Fragmentation is a form of asexual reproduction in which an organism breaks into two or more fragments, and each fragment develops into a new individual. Both sponges and sea anemones are examples of organisms that exhibit this mode of reproduction.
Sponges are simple multicellular animals that lack true tissues and organs. They possess a porous body structure, and when a sponge is fragmented, each fragment has the potential to develop into a new sponge through regeneration. These fragments contain specialized cells called archaeocytes that can differentiate into various cell types required for the formation of a new sponge.
Sea anemones, on the other hand, are marine animals belonging to the phylum Cnidaria. They have a cylindrical body with tentacles surrounding their mouth. When a sea anemone is fragmented, each piece can regenerate into a complete individual. The process involves the differentiation of cells within the fragments, leading to the development of new tentacles, body parts, and eventually a mature sea anemone.
Both sponges and sea anemones have remarkable regenerative abilities, allowing them to reproduce through fragmentation. This form of asexual reproduction enables them to colonize new areas, expand their population, and adapt to changing environmental conditions. Therefore the correct option is D
Know more about Sea anemones here:
https://brainly.com/question/9933861
#SPJ8
The Question was Incomplete, Find the full content below :
The organisms which can reproduce by fragmentation are:
(a) Corals and Sponges
(b) Corals and Spirogyra
(c) Sea anemone and Spirogyra
(d) Sponges and Sea anemones.
Coat color in cats is determined by genes at several different loci. At one locus on the X chromosome, the X+ allele codes for black fur, where the Xo allele encodes orange fur. Females can be black (X+X+), orange (XoXo) or tortoiseshell (a mixture of orange and black; X+Xo). Males are either black (X+Y) or orange (XoY). If a tortoiseshell female gives birth gives to one orange male, one black male, two tortoiseshell females, and one orange female, what is the genotype of the cat with which it was mated?
Answers
Answer:
The correct answer is : Stray male (X°Y)
Explanation:
The given information about the combination of the alleles and their characteristics are:
X⁺ = black allele
X° = orange allele
X⁺X⁺ = black female
X⁺X° = Tortoise shell female
X° X° = Orange female
X°Y = Orange male
X⁺Y = black male
According to the question if a Tortoise shell female gives birth gives to one orange male, one black male, two tortoiseshell females, and one orange female then :
The Tortoise shell female would be : X⁺X°
As it is known that X allele is dominant for the colors than by the punnete square would be give idea about all genotype, Because, male can’t have both X chromosomes to be tortoiseshell male, so the possibility is only black male (X⁺Y) or Orange male (X°Y)
Thus, the correct answer would be : Stray male (X°Y) (by punnet square)
What is the difference between de facto racism and de jure racism?
Answers
Which of the following promotes the rapid growth of bacteria?
А
Food held between 70-125° F
B
Cooking foods for long periods of time
с
Foods that are very dry
D
Foods that are held just above freezing
Answers
Answer: А . Food held between 70-125° F
Explanation:
Bacteria needs favorable FAT TOM conditions to grow. This means that bacteria needs favorable Food, Acidic conditions, Temperature, Time, Oxygen and Moisture conditions to grow.
When it comes to temperature, there is something called the Danger Zone where bacteria can rapidly grow and multiply by a rate of up to double every 20 minutes.
This danger zone is between 40°F - 140°F which means that food held at 70-125° F is in that danger zone and will promote the rapid growth of bacteria.
A. Food held between 70-125° F promotes the rapid growth of bacteria. Option A is correct.
The temperature range between 70-125° F (21-52° C) is commonly known as the "danger zone" for bacterial growth. Within this temperature range, bacteria can multiply rapidly and pose a risk of foodborne illness. This temperature range provides optimal conditions for bacterial growth and reproduction.
Bacteria thrive in warm and moist environments, and temperatures within the danger zone provide the ideal conditions for their proliferation. When food is held within this temperature range for an extended period, bacteria present on the food or introduced from the environment can multiply quickly, increasing the risk of food contamination.
It is important to note that cooking food for long periods of time (B) and foods that are very dry (C) can actually inhibit bacterial growth. High temperatures during cooking can kill bacteria, while dehydration can reduce the water content that bacteria need for growth and survival. On the other hand, foods held just above freezing (D) slow down bacterial growth but do not promote rapid multiplication.
To prevent bacterial growth and ensure food safety, it is recommended to keep perishable foods either below 40° F (4° C) or above 140° F (60° C) to minimize the time spent in the danger zone. Proper cooking, refrigeration, and temperature control are essential practices in preventing bacterial growth and maintaining food safety.
To learn more about bacteria, here
https://brainly.com/question/31495409
#SPJ6
What causes an ecosystem to move from a primary successional stage towards a relatively-stable mature ecosystem?
Answers
Answer:
The correct answer is "secondary succession, an ecological succession step where an area previously occupied by living beings is disrupted".
Explanation:
In ecological succession, an ecosystem changes and develops through a series of steps. The first step, is the primary successional stage where rocks or other sedimentary structures are colonized by microorganisms. The second step, where the ecosystems changes towards a relatively-stable mature stage, occurs when an area previously occupied by living beings is disrupted. This step is named secondary succession, and the most clear example of this phenomena occurs when wildfire clears oak and hickory forests.