what is half-life of mercury-203
Answer:
The correct answer is - 47 days approximately.
Explanation:
In this given graph is the decay graph of mercury-203, there is a representation of the relation of change in the amount of the mercury -203 with the time in days. The red arch is showing the change of parent isotope percent with elapsed time and the green dashed arch showing the daughter isotope percentage with isotope.
The half-life is the required time to decay an element to half of its inital amount, according to the definition the half-life of parent isotope mercury-203 is the amount where the red arch is present at 50% in the graph that is 47 days approximately.
Is neocortex an active brain? and why?
Answer:
Yes, The neocortex is the center for higher brain functions, such as perception, decision-making and language. Our group focuses on the mechanisms governing neocortex development, with a strong interest on the role and regulation of the neural stem cells.
Explanation:
What is the percentage of the offspring?!
Answer:
50% AO, 50% BO
Explanation:
there are 2/4 that are of AO blood, and 2/4 are of BO blood.
2/4 is equivalent to 50%
The amount of water vapor present in the air is
A water vapor
B humidity
C anemometer
D air pressure
Answer:
humidity
Explanation:
The amount of water vapor in the air is called absolute humidity. The amount of water vapor in the air as compared with the amount of water that the air could hold is called relative humidity. This amount of space in air that can hold water changes depending on the temperature and pressure.
help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Answer:
Nuclear Fusion
Uranium rods
Explanation:
What transitions occurs when an ice cube shrinks
Answer:
it changes from solid water to liquid water.
Explanation:
True or False: Muscle memory occurs when you practice a movement a lot and the body remembers it.
Answer:
true
Explanation:
Answer:
True
Explanation:
Which is not a function of the excretory system
A. Removing wastes
B. Maintaining homeostasis
C. Digestion
D. Exchange of gasses
Answer:
D. exchange of gasses
hope it helps
Scientists believe that the polar bear in Alaska and the brown bear in Russia evolved from a common ancestor which would be responsible for this evolutionary change
Answer: don’t know really how to explain it but it’s geographic isolation
The process which is responsible for the evolutionary change among polar bears in Alaska and the brown bear in Russia is geographical isolation.
What do you mean by Evolutionary change?Evolutionary change may be defined as the heritable change which is seen in populations and species over a long period of time, due to several mechanisms such as natural selection, random genetic drift, erotic selection, and mutation.
The mechanism of geographical isolation is considered one of the important factors in causing speciation.
This happens when the individuals of the species may be isolated due to any physical means such as mountains, rivers, etc for a long period of time.
Therefore, the process which is responsible for the evolutionary change among polar bears in Alaska and the brown bear in Russia is geographical isolation.
To learn more about Speciation, refer to the link:
https://brainly.com/question/2113835
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What produces toxic chemicals in the body?
Explanation:
Chemicals can be toxic because they can harm us when they enter or contact the body. Exposure to a toxic substance such as gasoline can affect your health. Since drinking gasoline can cause burns, vomiting, diarrhea and, in very large amounts, drowsiness or death, it is toxic.Using Figure 10-4 above, list the correct order for the diagrams.
A. CDAB
B. DCAB
C. DACB
D. CDA
UNIT TEST!! Help!! :C
1. Which statements describe gene therapy? Check all that apply.
☐ It cures all cases of cystic fibrosis.
☐ It involves the modification of DNA.
☐ It is easy to apply to all cells affected by the disorder.
☐ It attempts to replace a mutated gene with normal DNA.
☐ It does not always cure patients who use it.
2. A fruit fly has black eyes. Having red eyes is a dominant trait (R) and having black eyes is a recessive trait (r).
Which describes the fruit fly’s genotype and phenotype?
A.)genotype: black eyes
phenotype: Rr
B.)genotype: black eyes
phenotype: rr
C.)genotype: rr
phenotype: black eyes
D.)genotype: Rr
phenotype: black eyes
Thank you sm for helping <33
Answer:
for number one i got ☐ It involves the modification of DNA
☐ It attempts to replace a mutated gene with normal DNA.
☐ It does not always cure patients who use it.
FOR NUMBER TWO I GOT:
D.)genotype: Rr
phenotype: black eyes
plz mark brainliest!!!
Answer:
☐ It cures all cases of cystic fibrosis.
☐ It involves the modification of DNA. √
☐ It is easy to apply to all cells affected by the disorder.
☐ It attempts to replace a mutated gene with normal DNA. √
☐ It does not always cure patients who use it. √
Explanation:
One more biology multiple choice.
Answer:
A. Acocelomate
ex: Tapeworms(they dont have a digestive tract)
Explanation:
PLEASE ANSWERR ASAP I WILL GIVE BRAINLYEST AND REPORT (science) I KNOW 1, 2 AND 5 I NEED 3 4 AND 6
2 Why does Sean Brady feel optimistic about the discovery of this new antibiotic?
(A) because it has already been approved to treat illnesses in humans
(B) because it helped him launch his company, Lodo Therapeutics
(C) because it proved that lab studies are not necessary to develop new antibiotics
(D) because it suggests that more antibiotics are waiting to be discovered
Article : Scientists are studying new ways of finding antibiotics — in dirt
Answer:
D. Because it suggests that more antibiotics are waiting to be discovered
If the average high temperature in GR is 30 degrees in January and the average temperature in Miami is 74 degrees, what is the difference between high temperatures?
Answer:the equator
Explanation:
Which one of the following is an example of parasitism?
a. Flower and bee
b. An orchid growing on a tree
c. Clownfish and sea anemone
d. Tapeworm and dog
i really need help with this.
In a paternity case, a woman (blood type O) claims a man (type A) whose mother is O to be the father of her
child. Is there any possibility the woman is correct? If so, show the genotypes of the people involved and a likely cross to produce a child with blood type O.
Answer:
Yes, the mother's claim might be correct.
Please find the genotype of the parents and the cross below
Explanation:
Blood group in humans is controlled by three alleles namely; iA, iB, and i. Alleles iA and iB are dominant over allele i but co-dominant when together i.e. iAiB
Based on this, below are the blood types of an individual with the possible genotype;
Blood type A - iAiA or iAi
Blood type B - iBiB or iBi
Blood type AB - iAiB
Blood type O - ii
According to this question involving a paternity case, a woman with blood type O claims a man with blood type A whose mother is type O to be the father of her child. The woman has a genotype 'ii' while the man has a heterozygous genotype 'iAi' because his mother will contribute the 'i' allele.
Hence, using the genotype of the woman (ii) and man (iAi) in a cross as follows; ii × iAi (see attached image for punnet square), the following proportion of offsprings will likely be produced:
(2) iAi - blood type A
(2) ii - blood type O
Therefore, the woman's claim that the man is the father of her child with blood type O (ii) is most likely correct.
Help me please finish the hypothesis! Only have 2 minutes No websites
HYPOTHESIS: If 2 chambers of water are poured side-by-side, the warmer water will mix the cooler layer because it ___________
Answer:
Heat Transfer
Explanation:
If Two chambers of water are poured side-by-side, the warmer water will mix the cooler layer because the water molcules in a jar of hot water are more spread out and the two jars seek a balance of tempature.
Can y’all answer quick and correctly I’m ina bad mood rn
Answer: capillaries
Explanation:
Answer:
Capillaries
Explanation: Fluid is forced out of capillaries (filtration) by blood pressure (hydrostatic pressure). As plasma is filtered, globular proteins are concentrated in the blood passing through the glomerulus, as globular proteins are too large to be filtered.
Until the 1950's, plants and fungi were generally classified together in Kingdom Plantae. Now, they are classified in separate kingdoms.
Which of the following is a characteristic they share?
Answer:
it is D. both are eukaryotic.
Explanation:
I just answered and got it correct. hope it helps!
The common characteristic that a plant and fungi share is that they both are eukaryotic.
What do you mean by Kingdom?Kingdom may be defined as a taxonomic classification of the second-highest level, just below the domain.
Plants are autotrophic in nature, while fungi are heterotrophic in nature. Plants possess cell walls made up of cellulose, while fungi possess cell walls made up of chitin.
Therefore, the common characteristic that a plant and fungi share is that they both are eukaryotic.
To learn more about Kingdom Plantae, refer to the link:
https://brainly.com/question/71938
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Select all that apply.
Three diseases discussed in this lesson that can cause diarrhea are:
tetanus
amoebic dysentery
typhus
bacillary dysentery
cholera
food poisoning
Answer: The three are food poisoning and bacillary dysentery and the last one is amoebic dysentery
Explanation:
Can someone please help!! Will mark brainlist!!!
Answer:
All answers are in the image
Which of the following is a common use of Gamma Rays? *
O Heat-seeking missiles
O Airport Security
O Cell Phone Communication
O Cancer Treatment
A frog that is native to the rainforests of Central America is a member of the genus agalychnis. This genus is part of the hylidae family, and this specific frog belongs to the species callidryas.
What is the scientific name for this frog?
Summarize: How are the processes of natural selection and artificial selection similar? How are they
different?
This food chain shows the interactions between organisms found in a pond ecosystem.
Algae -Water Boatman - Diving Beetle - Frog - Heron
Which organism would be affected first if algae was removed from the ecosystem?
diving beetle
frog
heron
water boatman
how can Keeping track of what food you have and when it will go bad help prevent habitat destruction?
Answer:
It helps in the survival of organism which leads to prevent destruction of their habitat.
Explanation:
The available food and its shelf life are the information that helps the organisms to prevent destruction of their habitats because it provides information about in how many days the food can be eaten by the organisms which helps in surviving the organisms in the environment in which the food is limited. The wise use of available resources for the survival can help organism to survive in that environment and prevent to stop the destruction of their habitat completely.
what are examples of cyber bullying
Answer:
picking on people online
trolling
and exposing personal info online that is not yours to share
Explanation: