Some people think that one half of a sample decays after one half-life and the remaining decays after
another half-life so that there is no radioactive material remaining Explain why this is false

Answers

Answer 1

Answer:

yes it is false

Explanation:

correct


Related Questions

An 1815 volcanic eruption in Indonesia was followed by a three-year famine
around the world. How was the volcano linked to the famine?
A. The eruption preserved an ancient human civilization.
B. The eruption's heat and energy killed all the farmers in its path.
C. The eruption contributed to global warming.
D. The eruption's ash and gas significantly dimmed the sun.
sun
E. The eruption killed many local people.

Answers

D. Leading to reduced crop output

In polygenic inheritance, each of the genes controlling a trait will have exactly the same influence over the trait. Group of answer choices Yes since all genes having to do with a trait always have the exact same influence on a trait. No since different genes will exert varying degrees of influence on the trait None of the other responses are satisfactory answers. No since all traits are only controlled by one gene with two alleles.

Answers

Answer:

No, since different genes will exert varying degrees of influence on the trait

Explanation:

The term quantitative heritability refers to the transmission of a phenotypic trait in which expression depends on the additive effect of a series of genes.

Polygenic heritability occurs when a trait results from the interaction of more than one gene. And these genes can also have more than two alleles. The action of many genes and alleles can cause many different combinations that are the reason for genotypic graduation.

Quantitative traits are those that can be measure, such as longitude, weight, eggs laid per female, among others. These characters do not group individuals by any precise and clear categories. Instead, they group individuals in many different categories that depend on how the genes were intercrossed and distributed during meiosis. The result depends on the magnitude in which each allele contributes to the final phenotype and genotype. When they interact, they create a gradation in phenotypes, according to the level of contribution.  

Let us see, for instance, the eye color trait, which results from the interaction of many genes. Two of them significantly contribute to the color green, blue, or brown, while the rest of the involved genes play a role in defining the spectrum of phenotypes of each eye color. So, there are different tones of blue eyes, green eyes, and brown eyes, and the differences are determined by the contribution of each allele to the phenotype.

Specific immunity involves
actif
Pa
abs
both cell-mediated and antibody-mediated immunity
lysozyme found in sweat and tears
acti
or
MA
tior
724
surface barriers like skin, mucus and the cilia of the respiratory tract
cell-mediated immunity
O antibody-mediated immunity

Answers

Answer: both cell-mediated and antibody-mediated immunity.

Explanation:

Specific immunity involves targeting certain infections. This is done when certain cells assess the danger and release anti-bodies that target the antigens of the organism.

Once this is done, white blood cells will now be able to fight the organism or pathogen more efficiently.

There is therefore both a cell-mediated and antibody-mediated response.

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Answers

I think the answer is A

Which fact supports the conclusion that goats are crucial to the international food supply?


Americans use milk from goats to make cheese.

Most of the world’s milk comes from goats.

The flavor of a goat’s milk varies by its breed.

Many Americans prefer cow meat to goat meat.

Answers

Answer:

blanks

Explanation:

Answer:most of the world’s milk comes from goats

Explanation:

What do you already know about the rotation and the revolution of the Earth?

Explain your Answer

Answers

Answer:

I already know that the earth rotates on its axis because of magnetic forces. I also know that the earth revolves around the sun because of the pull of the sun's gravity.

Scientists conduct investigations to answer questions. Before making a valid conclusion, scientists must-
A- collect relevant evidence
B- tell people about the data
C- publish results from the investigation
D- discuss the investigation with other scientists

PLSSS HELPPPP

Answers

A- to collect relevant evidence

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If a Florida plant such as an orange or banana tree were grown in a northern state, what special care would it need to survive?
----------------------
A. extra water
B. direct sunlight
C. fertilizer in the soil
D. warm temperatures

Answers

I would say D. because Florida has much warmer temperatures than a northern state although I’m not sure as other variables can also come into affect

If plant such as an orange or banana tree were grown in a northern state climate, they would require warmer temperatures to survive:

what kind of climate does banana and orange grow in?Bananas, which are essentially tropical crops, thrive in temperatures ranging from 15 to 35 degrees Celsius and relative humidity levels of 75 to 85%. It may thrive in humid tropical lowlands such as Florida.Oranges thrive in all frost-free tropical and sub-tropical climates.the northern states of America have a comparitively cool and dry climate which may not be suitable for bananas and oranges.

hence, to grow these in northern states, these crops require warmer tempratures and humidity.

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Two plants are named Vinca minor and
Vinca rosea. Are they close relatives?
Explain.

Answers

Two plants are named Vinca minor and Vinca rosea. Are they close relatives? Explain. Yes they are close relatives because the share the same genus name and only their species name is different

Question 3 of 10
A cell membrane is very specific about what it allows across. How does this
help the cell?
A. It helps the cell absorb as many different molecules as possible.
O B. The cell works better when it contains fewer proteins.
O C. Transport proteins allow only enzymes to pass through the
membrane.
D. It is better for the cell if most molecules are prevented from
entering
SUBMIT

Answers

Answer:

D

Explanation:

Self-portraits can help you learn about positioning people in a photograph.

True
False

A camera's self-timer takes a picture after a certain amount of time has passed.

True
False

Answers

1.) True

The reason this is true is because adjusting the camera allows you to get an understanding of how someone else should look or how they would likely look best when photographed. It also gives an understanding of how a camera should be aimed to get the best result.

2.) True

While many cameras have this feature, most are configured to only use this feature when the photographer selects it. This feature allows the photographer to adjust the camera in case they feel something isn't quite right with it, and it also allows them to get into the picture themselves if they feel they want to.

Hope this helps you, and have fun with whatever it is you are doing with your camera.

-Sayonara

Answer:

it is true for a and true for b. (aka a is question and b is question 2.)

Explanation:

The digestive system of most birds includes a structure called the gizzard. The
gizzard crushes and grinds food, often with the help of small stones that the bird
has swallowed.
Which of the following structures in the human digestive system has a function most
similar to that of a bird's gizzard?
F esophagus
G large intestine
H small intestine
J teeth

Answers

Answer:

the small intestine

Explanation:

the small intestine breaks down food and export it to the large into the large intestine.

the large intestine converts the food into turd aka poop.

please answer !




will give brainliest

Answers

Answer:

c

Explanation:

Clouds can block light and heat from the Sun, making Earth's temperature cooler

What two nations were at the center of the Space Race in the 1950's Australia and Russia .China and United States .United States and Russia .
Russia and China​

Answers

Answer:The Space Race was a 20th-century competition between two Cold War adversaries, the Soviet Union (USSR) and the United States (US), to achieve superior spaceflight capability.

Explanation:

i looked it up

The two nations that were at the center of the Space Race in the 1950s should be considered  Russia and China.

What is Space Race?

The Space Race was the competition held in 20the century that lies between the two Cold War adversaries i.e. soviet union and the united stated for accomplishing the superior spaceflight capability.

Also, it has its origin in the ballistic missile that based on the nuclear arms race.

Learn more about the nation here: https://brainly.com/question/365702?referrer=searchResults

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B. Selective breeding. Humans have been choosing certain dog breeds to make other breeds. The Labrador retriever is an example of humans creating different breeds for certain tasks

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The trees in a forest were cut down to make room for a housing development. Explain how this impacts the environment.

Answers

Trees are very important natural resources. They are the source of food, shelter and habitat. We get various woods, timber , fodder from the forest. Trees hold the soil firmly. Forests helps in conducting water cycle. If trees are cut down then environmental pollution will increase because trees purify the Air. Land pollution , air pollution , water pollution may increase. Biodiversity can be affected.

Help me on this please

Answers

Answer:

a is the answer the the following question

PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.

Answers

Answer:

its B or D but I guess the most is D

9.How does a hummingbird's beak help it to meet its basic needs?Lector inmersivo
(1 Punto)

The beak helps the bird to fly.

The beak allows the bird to swim fast.

The beak scares away predators.

The beak allows the bird to eat the nectar out of flowers.

Answers

Answer: the beak allows the bird to eat the nectar out of flowers

Explanation: Hummingbirds have long, needlelike beaks they use to probe deep into flowers.. The hummingbird's beak is just a protective sheath for its tongue, which is actually what the hummingbird is using to get the nectar out of the flower.

hope that helps if you have any questions let me know and if you could mark this as brainliest i would really appreciate it and press the thank you button!

Fill in the blank with the appropriate word. ResetHelp The conducts impulses toward the soma. The conducts impulses toward the synaptic terminals. The is the region surrounding the nucleus. The is the enlarged end of an axon. The contains neurotransmitters. The is a cluster of RER and free ribosomes. The is another term for the soma of a neuron. The is the membrane of the axon. The is a cell that forms the blood 13brain barrier. The is a fine branch of an axon.

Answers

Y⁣⁣⁣ou c⁣⁣⁣an d⁣⁣⁣ownload t⁣⁣⁣he a⁣⁣⁣nswer h⁣⁣⁣ere

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Fill in the blank with the appropriate word as follows:

The dendrite directs electrical impulses toward the soma.The axon conducts impulses toward the synaptic terminal.The Perikaryon is the region surrounding the nucleus. The synaptic terminals ate the enlarged end of an axon.The synaptic vesicles contain neurotransmitters. The Nissl bodies are clusters of RER and free ribosomes.The Perikaryon or the cell body is another term for the soma of a neuron.The Axolemma is the membrane of the axon.The Astrocyte is the cell that forms the blood-brain barrier. The Telodendria is a fine branch of the axon.

What is a Neuron?

A neuron may be defined as a type of cell which is part of the nervous system. It sends messages to and from the brain. Neurons may also call neurons or nerve cells are the fundamental units of the brain and nervous system.

These cells are responsible for receiving sensory input from the external world, for sending motor commands to our muscles, and for transforming and relaying the electrical signals at every step in between.

Therefore, filling in the blank with the appropriate word is well described above.

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3. Which of the following is an example of
an effort to conserve biodiversity?
a. Use of pesticides
b. Driving large vehicles
c. Protecting plant and animal
species in a national park
d. Taking a piece of coral for a
souvenir after a scuba dive

Answers

C.
All the other would cause harm to biodiversity

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Answers

Answer: yo what grade is u in for these people to give you advanced word like this and also the letters are too small for me to see so I can't solve it right away.

Explanation:

Answer:

B

Explanation:

Calcitriol is made from

Answers

Calcitriol is, strictly, the 1-hydroxylation product of calcifediol (25-OH vitamin D3), derived from cholecalciferol (vitamin D3), rather than the product of hydroxylations of ergocalciferol (vitamin D2).

40 Even a tiny amount of moisture can support the life of mosses, which are nonvascular
plants. Why are mosses good pioneer species?
F. They grow very slowly.
G. They can survive in wet areas.
it. They can create a layer of soil on bare rock over time.
I. They can survive in areas that receive low levels of sunlight.

Answers

Both it.) And I.) Can be answers. You could argue either one is right.

How can an invasive species impact a local ecosystem?

Answers

Answer:

Habitat modification,

compete with native species for resources,

predation of native species

herbivory on native plants

being in pathogens

leading to loss of genetic diversity :)

Will give brainliest
A sequence of RNA is shown below:
CAA AAU GCG AUC 3

Using the codon chart below, what is the sequence of amino acids that is produced when this RNA is translated?
Choose 1 answer:
(Choice A)
A
Gln - Asn - Ala - Ile

(Choice B)
B
His - Asn - Ala - Met

(Choice C)
C
Gln - Asn - Pro - Tyr

(Choice D)
D
Val - Leu - Arg - Stop

Answers

Answer:

Choice D

Explanation:

When you translate the RNA, you replace C’s with G’s (and vice versa) and A’s with U’s (also vice versa). So, you get GUU UUA CGC UAG. Then you read the codon chart to get your answer. Hope it helps :)

The sequence of the amino acids which is being produced when this RNA is translated is Val - Leu - Arg - Stop. Thus, the correct option is D.

What is a Codon?

Codon can be defined as the sequence of three consecutive nucleotides in the nucleic acids such as a DNA or RNA molecule which codes for a specific amino acid. Certain codons are responsible for the signal of the start or end of the translation process.

Codons are universal in nature throughout the different living organisms. There are about 64 different codons which codes for 20 standard amino acids in the cell. There are three stop codons in the genetic code which stop the process of translation of protein molecules including UAG, UAA, and UGA.

The sequence of the amino acids which can be produced when this RNA is translated 5'-CAA AAU GCG AUC-3' will be Val - Leu - Arg - Stop.

Therefore, the correct option is D.

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???????????????,,,??,???? What is the answer to number 4 and 5

Answers

Answer:

Questions 4-snow and 5 is rain showers

45637456425637561457324751276567 x³+y³+z³=kf im homopfobic

Answers

what- ...... i’m so confused

Sally was exposed to hepatitis. Her doctor gave her an injection containing
antibodies to help her fight off the infection before her immune system had a chance
to kick in.
action
or
MAR is
tion
72411
active immunity - naturally acquired
active immunity - artificially acquired
passive immunity - naturally acquired
passive immunity - artificially acquired

Answers

Answer:

The correct answer is - passive immunity - artificially acquired.

Explanation:

Passive immunity is the immunity that involves giving or acquiring antibodies from other sources instead of developing them on one's own. This type of immunity can be natural and artificial. Mother breastfeed the babies, is the natural passive immunity example as milk also contain antibodies required for immunity of babies.

Artificial passive immunity is the immunity that comes from injecting the antibodies created in different animals or persons which called antiserum or vaccines such as snake antivenom.

HELP ME PLEASE ? Helppppppppppp

Answers

Let me get a quick answer
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Jadan has a drawer of different colored t-shirts. He has 4 white t-shirts, 5 black t-shirts, 3 red t-shirts and 2 blue t-shirts. He is going out of town and is in need of 2 t-shirts. What is the probability that he will randomly choose a white t-shirt without replacement and then choose a blue t-shirt? For every 2 hours, approximately $1,302 worth of product is sold to consumers. How much money will the company make from selling this product for an entire month (30 days)? what's the answer WILL GIVE BRAINLIEST ASAP 1. Identify and describe two factor which will effect the...A. gravitational potential energy of a systemB. magnetic potential energy What are three similarities between biotic and abiotic factors?i will give brainiest if you help me out !!! What percentage of the shape is blue?Write your answer using a percent sign (%). The fact that British officials during the period of 1763-1776 would not respond to American colonists complaints about onerous tax laws was one of the leading causes of the writing of which of the following selections?Select one:A. The Declaration of IndependenceB. The Magna CartaC. The United States ConstitutionD. The English Bill of Rights Solve this question for brainlest. This is due at 6 pm What is the approximate value of 12 ?3.5264.5 Quin lucha solo en su suelo, va creando sus propias instituciones, su msica y aspiraciones? a. el criollo c. el tano b. el espaol d. los esclavos Please select the best answer from the choices provided A B C D 6rr6gryr6ffgrfrf6rfg6rfg6rgfrfgrf6rgfrg6frg6gf6rgrfgrf6gf6rfgr6fgr6fgr6fgr6fgr6gr6gfr6fg6fg6frgr6grf6gr6fr6fg6rgr6g6rgf6rfg6fgr6fg6rgr6fgr6fg When you find one morethan a number, only theones digit will change.Can you give some examples please? What is the median age showed in the box and whisker plot? HELP PLS? BRAINLIST WILL BE REWARDED a small glass jar is filled with colorful marbles. Six are blue, eight are yellow, five are green, and eleven are red. Marbles are chosen randomly from the jar one at a time without replacement. What is the probability of choosing a yellow marble followed by a blue one? find the value of 1 + 3x when x = 1 A certain company just announced it will cut next year's dividends from $4 to $2.50 per share and use the extra funds to expand. Prior to the announcement, the company's dividends were expected to grow at a 4% rate, and its share price was $50. With the planned expansion, the company's dividends are expected to grow at a 6% rate. What share price (in dollars) would you expect after the announcement Help ASAP please! Thank you so muchWhat is the slope of the graphed line? (1) The weather was ideal for most of the tripcool in the mornings and sunny and warm in the afternoons. (2) In September, David, Celeste, Sophia, and Doug took a bike trip through the Lake District of Italy. (3) One day, the four friends woke to discover that a rainstorm was passing over the area. (4) Consulting their guidebooks, they found a ferryboat that would transport them with their bikes and gear across the lake to their next destination. (5) Rather than be wet cyclists, they chose to travel the dry wayplaying card games and seeing Italian villas through the ferryboat's windows.Which sentence is in the wrong place? A. sentence 2 B. sentence 3 C. sentence 4 D. sentence 5 (((4\sqrt(2) - 2 \sqrt(6)) - (\sqrt(2)- \sqrt(6) )))/(\sqrt(3)-1) Decide la ubicacin de cada verbo segn el significado.Si yo fuera a Espaa, yo vendra muchas cosas durante el viaje. Yotodos los das a comer tapas yprobar la paella y una tortilla espaola. Yovisitar muchos castillos yque sacar muchasfotos de todo. Al regresar a casa,a visitar a mi familia y lesa todos lo mucho que disfrut.PLEASE HELP ASAP THANK YOU