The live weasels contained 29 g of 14C. Preserved specimens found to contain 10.9 g of 14C. How old were the preserved weasels

Answer:

A i believe

Explanation:

answer is A

Explanation:

A. Genetic drift

Answer:

Explanation:

A

Answer:

C) P-wave

Explanation:

P waves travel the fastest and are the first to arrive from the earthquake. In S or shear waves, rock oscillates perpendicular to the direction of wave propagation. In rock, S waves generally travel about 60% the speed of P waves, and the S wave always arrives after the P wave.

Answer:

The jaws of snakes are loosely jointed and extremely flexible. There are no ears or movable eyelids; the eyes are covered by transparent spectacles, or ocular scales.

Explanation:

Snakes have good vision.There are no ears or movable eyelids; the eyes are covered by transparent spectacles, or ocular scales.

When left ventricular pressure exceeds the pressure in the aorta, the aortic valve opens, initiating the ventricular ejection phase.

During the cardiac cycle, the left ventricle contracts to pump blood into the systemic circulation. As the left ventricle contracts, its pressure rises. When the left ventricular pressure surpasses the pressure in the aorta, the aortic valve, located between the left ventricle and the aorta, opens.

The opening of the aortic valve allows blood to be ejected from the left ventricle into the aorta. This marks the beginning of the ventricular ejection phase. As the left ventricle continues to contract, blood is forcefully propelled into the aorta, resulting in systemic blood flow.

The ventricular ejection phase is an essential part of the cardiac cycle, as it ensures efficient delivery of oxygenated blood to the body's tissues and organs. Once the left ventricular pressure falls below the pressure in the aorta, the aortic valve closes, preventing blood from flowing back into the ventricle during diastole.

This closure signifies the end of the ventricular ejection phase and the start of the ventricular relaxation phase, known as diastole, in preparation for the next cardiac cycle.

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7 steps of translation and transcription are initiation, promoter escape, elongation, termination, 5' capping, polyadenylation, and splicing.

The process by which cells use the genetic information contained in messenger RNA (mRNA) to make proteins. mRNA is made by copying DNA, and the information it contains tells the cell how to combine amino acids to form proteins.

Transcription in genomics is the process of making RNA copies of a gene's DNA sequence. This copy, called messenger RNA (mRNA), carries the gene's protein information encoded in DNA.

Transcription is the process of copying (transcribed) the DNA sequence of a gene into an RNA molecule. Transcription is a key step in using information from genes to make proteins.

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Answer:

muscular system helps us move by applying force and skeletal system holds us up.

Explanation:

Answer: Please see answers in explanation column

Explanation:

According to the Law of Conservation of Energy, Energy CANNOT be created or destroyed, but it can transform or change  from one form to another.

We can therefore say that

---a ball dropped from a height changes from --- gravitational potential energy to motion energy.

---sunlight falling on solar panels changes from ---radiant energy to electric energy.

--- a person talking into a microphone changes from--sound energy to electric energy.

Answer:

Answer below:

Explanation:

sound energy to electric energy---> a person talking into a microphone

radiant energy to electric energy---> sunlight falling on solar panels

gravitational potential energy to motion energy---> a ball dropped

from a height

Answer:

Hi, there the answer is D.

Explanation:

Answer:

Profase I

Explanation:

La Profase I es la primera etapa de la meiosis en la cual el material genético se condensa para formar los cromosomas y se desarrolla el huso acromático (huso meiótico). El entrecruzamiento, también conocido como sobrecruzamiento o crossing-over (por su nombre en inglés), es un proceso que consiste en el intercambio de material genético entre cromátidas no hermanas de cromosomas homólogos. El entrecruzamiento se produce durante la Profase I, es decir, durante el período inicial del primer ciclo celular meiótico (meiosis I). El sobrecruzamiento tiene una importancia fudamental desde el punta de vista evolutivo ya que este fenómeno incrementa la diversidad genética de las gametas obtenidas mediante este proceso.

Answer: They cause oceanic winds to carry water vapor.

Explanation: Took the test and got it right.

Answer: They cause oceanic winds to carry water vapor.

Explanation: i also took the test  hope this helps

Answer:

B.

Explanation:

Answer:

B. Most are neutral and unnoticed.

Explanation:

Hope it helps! =D

In the early days of paleontology, dinosaurs were assumed to be cold-blooded, giant lizards. However, the discovery of Archaeopteryx, a transitional fossil between dinosaurs and birds, challenged this idea.

Archaeopteryx exhibited features of both dinosaurs and birds, such as having teeth, a long bony tail, and feathered wings. This discovery led scientists to reconsider the classification of dinosaurs and understand that some of them, particularly theropods like Archaeopteryx, was more closely related to birds than previously thought.

This finding ultimately contributed to the current understanding that many dinosaurs were warm-blooded and had more diverse traits than just giant lizards.

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Answer:

It is a seeded vascular plant.

It does not depend on insect pollination.

Explanation:

The complete question is: A scientist has discovered a new plant species in the Amazon rainforest. She tells her fellow scientists that the plant she has found produces a cone. What might they say about how this plant is different from an angiosperm? Its seeds have one or two cotyledons. Its stems' vascular bundles are scattered. It does not depend on insect pollination. It is a seeded vascular plant.

The correct option would be that the plant is a seeded vascular plant and does not depend on insect pollination.

Gymnosperms are the only group of plants that produce cones. They are one of the plant groups that have vascular tissues in the form of xylem and phloem as well as been able to produce seed in the form fo cones. Hence, they are said to be seeded vascular plants.

Gymnosperms also carry out their pollination by relying solely on wind for the transfer of their pollen grain to the female organ. In other words, they do not depend on insect for pollination.

Answer:

I'm assuming you are referring to a population such as a forest population. Appropriate answers would be 1) for a diverse food chain. 2) so the mechanics of an ecosystem can work and have multiple sources. IF you are referring to a population such as a given population of a species, it is important to have variety so mutations can occur and genetics can mix. This kicks off the survival of the fittest and Darwin's theory's. This, of course, takes plenty of time to see any change but genetic mutation is essentially survival of the fittest. If a mutation increases survival likelihood, they are now more fit to survive, thus creating a new "weak variation" in comparison to a new "strong variation" within a species. Read below for furhter explanation on previous stated points. I really hope this helps!

Explanation:

1) Populations of consumers would struggle if there is only one producer. If there are multiple variations of any producers, it will allow the consumers to thrive since there is an abundance and variation of producers. The same can apply to consumers since there are herbivore consumers and carnivore consumers. A population of wolves would struggle if their only food source were squirrels. If rabbits and deer were in the mix, wolves would thrive a lot easier.

2) If there was only one species of decomposer within an area, the decomposition process would take much more time due to a lack of efficiency with time. If there are multiple decomposers it wouldn't be much of an issue. Same goes with scavengers. There would be a lot of waste if only on scavenger lived within an area compared to multiple.

Answer:

false

Explanation:

Answer:

False

Explanation:

They always start with a producer

Answers:

High-energy electrons from NADH and FADH2, are passed into and along the   electron transport chain   .

The energy from the electrons moving down the chain is used to move H+ ions across the   inner membrane   .

H+ ions build up in the    intermembrane     space, making it    positively     charged and making the matrix negatively charged.

In the inner membrane, H+ ions move through channels of   ATP synthase   .

The ATP synthase uses the energy from the moving ions to combine ADP and phosphate, forming high-energy         ATP          .

Vitamin K has long been known for: its role in blood clotting. The correct option is e.

Vitamin K is a fat-soluble vitamin that is critical for blood clotting, bone metabolism, and regulating blood calcium levels. Vitamin K is found in a variety of foods, including leafy greens, such as lettuce, spinach, and kale. Vitamin K is important in the body because it aids in the formation of blood clots. As a result, it aids in the healing of wounds and the prevention of excessive bleeding.

Content loaded vitamin K is particularly beneficial for individuals who take blood-thinning medications like Warfarin, which inhibit vitamin K's blood-clotting effects. Vitamin K-rich foods should be limited if an individual is on this type of medication.

Vitamin K is essential for blood clotting because it aids in the formation of prothrombin, a protein required for blood clotting. Vitamin K is needed for the production of several blood clotting factors, including prothrombin, that are made in the liver. Vitamin K deficiency may lead to bleeding disorders because insufficient clotting factors are produced.

Vitamin K also aids in the formation of bone proteins that are important for bone growth and development. It promotes proper calcium utilization, which is critical for bone health. Vitamin K deficiency has been linked to low bone density and an increased risk of osteoporosis.

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Answer:

because of the following ways

Explanation:

1)because they protect plants

2)because they protect animals

3)because they are starting to use less vehicles

4)because they lessened the use of industrial vehicles

Natural selection is caused by the interaction between organisms and their environment. It is the process by which certain traits or characteristics become more or less common in a population over time based on their relative fitness or adaptiveness in a particular environment.

Factors that can contribute to natural selection include environmental factors such as climate, food availability, and predation pressure, as well as biological factors such as competition for resources and mate selection. Over time, natural selection can lead to the evolution of new species or the adaptation of existing species to their environment.

A mutation is a change that occurs in the DNA sequence of an organism's genome. It can happen spontaneously during DNA replication or due to exposure to external agents such as radiation, chemicals, or viruses.

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Answer:

They all show evidence of defleshing by other hominins.

Explanation:

I’m not sure tho.

Chris should not be influenced by his friendship with the person in the advertising budget, and should instead budget for departments in a way that brings success to the business.

You must do your study on the running expenses associated with your firm before you begin preparing a budget. Having a solid understanding of your expenses provides you with the foundational knowledge required to create an efficient spending strategy.

By overestimating revenue and taking on more debt to cover operating expenses, many firms have failed in the past. This undermines the goal of making a budget in the first place. Analyzing previously reported revenue is a good approach to keep things realistic. Businesses are required to track revenue on a monthly, quarterly, and yearly basis.

The very success and survival of a business depends on the budget because the amounts going to the different departments keep them running and contributing.

If Chris sends more money to advertising because his best friend is there, he might cause losses to the business from other departments not getting the money needed to properly function.

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Soil research has shown that soil profiles are influenced by five separate, yet interacting, factors: parent material, climate, topography, organisms, and time. Soil scientists call these the factors of soil formation

Answer:

Factors that determine a soil's characteristics include: the type of parent rock from which the soil forms, the climate in the area, the slope of the land, the type and amount of vegetation, and the length of time the rock has been weathering.

Explanation:

Edge2020

Answer:

Bacteria and Archaea

Explanation:

Answer:

Single-celled organisms belonging to the Bacteria and Archaea domains are known as prokaryotes. Prokaryotic cells are smaller than eukaryotic cells and lack a nucleus and organelles. A cell wall surrounds all prokaryotic cells. Many of them also feature a polysaccharide capsule or slime layer.

The regulatory element that is not composed of DNA sequences is the transcription factors themselves.

Transcriptional regulatory elements, which control gene expression, are typically composed of specific DNA sequences. However, there is one regulatory element that is not composed of DNA sequences: the transcription factor proteins themselves.

Transcription factors are proteins that bind to specific DNA sequences in the promoter or enhancer regions of genes, influencing the rate of gene transcription.

While the DNA sequences to which transcription factors bind are considered regulatory elements, the transcription factors themselves are not composed of DNA sequences. Instead, they are protein molecules encoded by genes.

Transcription factors play a critical role in regulating gene expression by interacting with DNA and other proteins to either enhance or suppress transcription. They can act as activators, promoting gene expression, or repressors, inhibiting gene expression.

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