Answer:
Percentage of the sample that would remain after the third half life is 12.5%
Explanation:
After every half life, the amount of substance get reduced to it 50%
Let us say that initial amount of substance is 100
After 1 half life , remaining substance = 50
After 2 half life , remaining substance = 25
After 3 half life , remaining substance = 12.5
Percentage of the sample that would remain after the third half life is 12.5%
PLEASE HELP WILL MARK BRAINLEST!
Answer:
it is B
Explanation:
When beach erosion occurs you have several events that take place depending on what environmental elements are involved .What elements is most influential when it comes to abrasion ?
A:Wind
B:Snow
C:Hail
D:Lithium
A material was cooled from 100ºC to 40ºC. What is the temperature change?The specific heat of water is 4.18J/goC. I need the full explanation would mean a lot to me.
Answer:
-60°C
Explanation:
According to this question, a material was cooled from 100ºC to 40ºC.
The temperature change, which is symbolized by ∆T = final temperature - initial temperature
That is, ∆T = T2 - T1
In this question, T2 = 40°C, T1 = 100°C
Hence, ∆T = 40°C - 100°C
∆T = -60°C
a. nuclear energy
b. geothermal energy
c. fossil fuels
Answer:
c
Explanation:
Answer: Fossil Feuls
Explanation:
Coal, oil, and natural gas are fossil fuels that are energy that were produced from the remain of organisms that lived millions of years ago.
Which of the following best explains why the polymerase from the species T. aquaticus is often used for PCR?
Answer:
B) T. Aquaticus polymerase does not denature at high temperatures.
Explanation:
i did it
Write the steps in order that happen in photosynthesis
Answer:
Step 1-Light Dependent. CO2 and H2O enter the leaf.
Step 2- Light Dependent. Light hits the pigment in the membrane of a thylakoid, splitting the H2O into O2.
Step 3- Light Dependent. The electrons move down to enzymes.
Step 4-Light Dependent. ...
Step 5-Light independent. ...
Step 6-Light independent. ...
calvin cycle.
Explanation:
Why do other stars look much smaller than the Sun when viewed from Earth?
O A. They are much farther away than the Sun.
B. Their temperatures are much lower than the Sun's.
O C. Their luminosities are much less than the Sun's.
O D. They have diameters much smaller than the Sun's.
SUBMIT
Answer:
A
Explanation:
They are very far away compared to the sun
Answer: A
Explanation: I got it right
A brown cow is mated with white cow and they produce a roan cow Roan cows are brown with white spotsWhich statement best explains this phenomenon
Two indicators that will help you in determining which way to mount bite-wing radiographs are (1) the curve of Spee curves _______________ toward the distal, and (2) mandibular molars have __________ distinct roots.
Answer:
The correct answer is - upward, two.
Explanation:
The bitewing radiograph (BW) is a radiography image that is used to see the crowns of the maxillary and mandibular teeth, the interproximal surfaces of the teeth, and identifying interproximal caries.
The curve of the spee is also can be seen and mount with this image the curve of the spee is start at the tip of the lower canine, rn with the buccal cusp tips of the premolars and molars and continuing to the anterior end of the ramus. it is 2-D and upward from distal. It also shows that mandibular molar teeth have two distinct roots.
If 32% of a DNA molecule consists of thymine, what percentage must there be of the other bases? Show calculations or explain your results
Which of the following examples is a non-renewable source of energy A.Wind B.hydroelectric C.Nuclear power D.Wood
Answer:
An example of non-renewable source of energy would be C) Nuclear power.
Explanation:
Renewable resources include biomass energy (such as ethanol), hydropower, geothermal power, wind energy, and solar energy. Biomass refers to organic material from plants or animals, whilst Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced, which is a major problem for humanity as we are currently dependent on them to supply most of our energy needs.
I hope this helps! Have a great day! -Olli :]
Nuclear power is a non-renewable source of energy. It is derived from the energy released by nuclear reactions, which are fueled by radioactive materials such as uranium or plutonium. Therefore, option (C) is correct.
What is nuclear power?Nuclear power is a form of energy that is generated from nuclear reactions. It involves the use of radioactive materials, such as uranium or plutonium, which undergo nuclear fission in a reactor to produce heat. This heat is then used to generate steam, which drives a turbine and produces electricity. Nuclear power plants are used to generate electricity for homes and businesses, and they are typically very efficient and reliable sources of energy.
However, nuclear power also has potential drawbacks, including the risk of radiation leaks or accidents, the long-term storage of radioactive waste, and concerns over nuclear proliferation. Despite these concerns, nuclear power remains an important component of the world's energy mix, and ongoing research is focused on developing safer and more sustainable nuclear technologies.
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Which one is more biologically disruptive a point mutation or a frameshift mutation
Answer:
Frameshift
Explanation:
A point mutation can be insignificant due to the genetic code, many amino acids come from similar codons (where one base can be incorrect and it results in the same amino acid). If it does change the amino acid, having only one different amino acid in a whole polypeptide chain usually does not cause a major problem.
However, a change in the reading frame can be a major issue because it changes every codon form what it should be. A frame shift mutation can even prevent the translation of a protein entirely if it effects the start or stop codon.
Terribly articulated, but the answer is 100% frameshift
Although effective in treating erectile dysfunction, Viagra has the side effect of reducing systemic blood pressure by causing ______.
Why is the immune response after reinfection much faster than the adaptive immune response after an initial infection?
Answer:
Upon reinfection, the memory cells will immediately differentiate into plasma cells and CTLs without input from APCs or TH cells.Explanation:
Hope i helped (Tell me the results in the comments below pls) Good Luck!PLS HURRY!!!!!
If two parents each have one dominant allele and one recessive allele for curly hair (Cc), what is the probability they will create an offspring with two recessive alleles? Draw a Punnett square to explain your answer.
i drew the punet square i hooe that helps
Explanation:
the answer is .25 or 1/4
YAHHHOOOOOOOOOBrudsjwkowsjjw
Answer:
Step-by-step Explanation:
In this food chain, Shrubs(Producer)>Deer(Primary Consumer)>Fox(Secondary.
Consumer), if shrubs have 6,000 Kcal of energy available to it, then the amount of
energy available to the Fox is....
a) 60 kcal
b) 600 kcal
C) 0.6 kcal
d) 6 Kcal
Answer:
it's b
Explanation:
take a zero away every time you move up
which factor is most likely responsible for the differences in climate between region A and region B
A. nearness of region B to a cool ocean current
B. higher elevation of region B
C. nearness of region A to subtropical jet stream
D. lower latitude of region A
Answer:
Explanation:
a is the correct answer
Answer:
B. Higher elevation of region B.
Explanation:
I got it correct on my AP3X exam! :)
What does delegation involve?
Answer:
Delegation is commonly defined as the shifting of authority and responsibility for particular functions, tasks or decisions from one person (usually a leader or manager) to another. ... Delegation does not involve telling people what to do.
Explanation:
Hope that helps!
Answer:
Delegation does not involve telling people what to do. However, it involves explaining the outcomes and results that are expected to be achieved. They are then expected to work out the 'how' and the steps involved.
Colorblindness is sex recessive A female who is heterozygous for -green color blindness normal male. What is the chance the boys wil be colorblind Do the Punnett Square!
Answer:
The correct answer is - 50% of boys will be colorblind.
Explanation:
Colorblindness is an X-linked recessive disorder which means it will affect a female if present in both X chromosomes whereas in males there is only one X chromosome so even one chromosome with the mutated gene will cause the disorder.
Cross: heterozygous female (XHXh) with a normal man (XHY)
gametes: XH Xh and XH Y
Punnett:
XH Y
XH XHXH XHY
Xh XHXh XhY
male color blind ratio: 1/2 = 50%
A student designed an experiment to demonstrate the interaction between Earth systems. The steps of the experiment are given below.
Fill three-fourths of a glass jar with water.
Add a teaspoon of liquid dish soap and a teaspoon of vinegar to water.
Tighten the lid and shake the jar to mix the ingredients.
Swirl the jar in a circular motion and watch the spinning motion of the liquid inside.
The student’s experiment demonstrates the formation of
A- blizzard due to the interactions between the hydrosphere and geosphere
B- hurricanes due to the interactions between the geosphere and atmosphere
C- tornadoes due to the interactions between the hydrosphere and atmosphere
D- thunderstorms due to the interactions between the hydrosphere and cryosphere
Answer:
Its C
Explanation:
-Ella-
The experiment performed by student only creates the vortex, caused by the interaction between the liquid and its movement in the jar. Therefore, none of the statements are true.
What is vortex?The experiment performed by student involves mixing water, dish soap, and vinegar in a jar, thereby, creating a solution having a lower surface tension than plain water. Due to swirling of the jar, the liquid inside the jar spins creates a difference in surface tension between the center and the edges of the jar.
This effect is known as the vortex, caused by the interaction between the liquid and its movement in the jar.
The experiment by the student does not demonstrate the interaction between Earth systems. Blizzards and hurricanes occur due to interaction between the atmosphere and the Earth's surface, while tornadoes and thunderstorms occur due to atmospheric convection currents.
Therefore, only vortex is caused by the interaction between the liquid and its movement in the jar.
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Answer 10 and 11 please
Answer:
the answers volune of headAnswer:
10. A11. CHope this helps
What does the spinal cord do?
Answer:
The brain and spinal cord are your body's central nervous system. The brain is the command center for your body, and the spinal cord is the pathway for messages sent by the brain to the body and from the body to the brain.
A local gardener found small green aphids sucking the juices from a clover bush. This causes the clover bush to lose nutrients. What type of ecological relationship exists between the aphids and the clover bush?
Answer:
the circle of life is considered here
plant grows
bugs are born
bugs eat plants
plants regrows from seeds that are dropped
and that repeats!
Explanation:
_________________________ is a process of forming proteins based on a sequence of DNA. The first step of the process in which DNA is copied into RNA is called ______________________. _______________________ is the second step, is the process of combining amino acids to form proteins. *
Answer:
Transcription, translation
Explanation:
Protein synthesis is the first blank
Transcription is the second blank
mRNA Translation is the third blank
Muscles attach to ____ and are responsible for the body's movement.
What could be in the blank?
Answer:
Skeletal muscle is attached by cord-like tendons to bone, such as in the legs, arms, and face. Skeletal muscles are called striated (pronounced: STRY-ay-ted) because they are made up of fibers that have horizontal stripes when viewed under a microscope.
Explanation:
A stable ecosystem is characterized by having A)predators that outnumber their preyB)a continual input of energyC)limited autotrophic nutritionD)no competition between species
Answer:
B) a continual input of energy.
Explanation:
An ecosystem can be defined as the natural living habitats of both living and non-living organisms, in which they interact with one another. Essential services such as plant pollination, water purification, nutrient cycling etc that are being provided by the ecosystem are really very vital, important and useful for the sustenance of life, both for humans and enhances social welfare.
An ecosystem is generally considered to be stable if it's capable of applying self-regulating mechanisms in order to return to an equilibrium state, after an experiencing an outside disturbance or perturbation. Thus, a stable ecosystem maintains a natural balance of nutrients and energy.
In an ecosystem, producers are the living organisms that are capable of manufacturing their own food and as such can provide energy or food for the other living organisms (consumers) in a food chain. Thus, producers are mainly known as the foundation of a food chain and are at the top.
Generally, a producer gets energy from the sun and converts it into food. The cells found in producers are capable of converting the energy received directly from the sun into food through a process generally referred to as photosynthesis, converting carbon dioxide from the air, water from the soil, minerals and energy from the sun into organic nutrients.
Hence, a stable ecosystem is characterized by having a continual input of energy.
The greatest delivery of oxygen from the blood to the surrounding tissues occurs at 37C. Colder blood temperature results in greater dissociation of oxygen and hemoglobin. Hemoglobin has a lower affinity for oxygen under high temperature conditions. Increasing blood pH results in more oxygen unloading in tissues.
Answer:
Option 3 (Hemoglobin.................conditions) is the correct statement.
Explanation:
In the given question, the graph seems to be missing. Please find the attachment of the graph below.
Everything just produces the main controller throughout the curve all through hyperphrenic disease, this implies the hemoglobin compatibility for oxygenation is affected by the heat intensity. When warming reduces sensitivity, the appreciation rises when the temperature lowers or drops.There are other choices not associated with the condition. Thus, the response is the correct one.
Evidence for evolution includes the presence of a blank which are similar structure shared by different species
. homologous structures. Homologous structures are similar structures shared by different species. For example, the anatomy of joints in bones of birds and dinosaurs, support the idea that these two groups have a common ancestor.
Help plssss help pls
Answer:
5. the answer is E 100
6. the Anse is A. 0
8. the answer is D 75 probability