What is the age of a meteorite if potassium-40 decayed from 80 g to 10 g? The half-life of potassium-40 is 1.3 billion years.
1.3 billion years
2.6 billion years
3.9 billion years
5.2 billion years
Answers
Answer: b
Explanation: i toook the test
Answer: C.
Explanation:
Related Questions
which codon on the mrna strand codes for the amino acid carried by the aminoacyl-trna represented in the figure?
Answers
Answer:5’UUC-3
Explanation:
Sucrose is an organic compound made by plants for quick energy.
What type of organic compound is sucrose?
protein
carbohydrate
lipid
nucleic acid
Answers
Answer:
it's a carbohydrate
Explanation:
Sucrose (which is known as a table sugar) is a very common disaccharide, which is made up of the monomers glucose and fructose.
HELP!!! WILL GIVE MAX POINTS!! Doing a Lab Report on Natural Selection about beans. For example 20 dark red beans and 35 light red beans (kidney beans) Sample Response: When the volcano erupted, the dark red walking beans were easier to see. Thus, more dark red beans were eaten during days four, five, and six. If the pollution continued, there would be fewer and fewer dark red walking beans over time.
Questions being asked are:
1. What is the purpose of the lab?
2. What is your hypothesis for this experiment?
3. What methods are you using to test this hypothesis? (Outline the steps of the procedure in full sentences.)
4. 4. What graphs would clearly represent the trends in your data?
Your Student Guide includes information on which graphs to construct. Each graph should have the following items:
a. An appropriate title
b. Appropriate labels for each axis
c. An appropriate scale for each axis
d. The correct units for the data
Complete a rough sketch of each graph.
5. What do the data in your graphs tell you? (Explain in one or two sentences what trend is shown in each of your graphs.)
6. What does the data tell you about your hypothesis? (State how your hypothesis is either supported OR refuted by the data)
7. How does the data support your claim above? (Explain your statement above. Be sure to refer to specific pieces of data from your experiment that supports your argument)
8. 8. If you could repeat the experiment and make it better, what would you do differently and why?
There are always ways that experiments can be improved. Now that you are a veteran of this experiment and have experience with the procedure, offer some advice to the next scientist about what you suggest and why.
Answers
Answer:
During the days four through six the population of the dark red beans changed. The change was negative meaning that there was less dark red beans that light red beans. This happened because it was harder to see the light red beans because the color of the air changed. In result of that the zocco ate mostly dark red beans.
Explanation:
Which of the following should be included in a good conclusion?
Answers
Answer:
b? hope this helps have a nice day!
Which of Earth's spheres are involved in the water cycle?
O A. Atmosphere, hydrosphere, and biosphere only
Imy
O B. Atmosphere and lithosphere only
O C. Atmosphere, lithosphere, and hydrosphere only
O D. Atmosphere, lithosphere, hydrosphere, and biosphere
Answers
Answer:
the answer is D.
Explanation:
all of the spheres interact with each other in order to make the water cycle occur.
this is about environmental systems
Answers
Answer:
A. A weak or strong current
Explanation:
D. is inccorect because rivers are always freshwater
C. is incorrect because seawater is salt water
B. is incorrect because rivers have waterflow.
Mark me brainliest and have a great day!
What distinguishes an acute disease from a chronic disease?
What is the difference between them
Answers
Answer:
Acute illnesses generally develop suddenly and last a short time, often only a few days or weeks. Chronic conditions develop slowly and may worsen over an extended period of time—months to years.
Acute diseases refer to the medical condition that occurs suddenly and lasts for a shorter period of time. Chronic diseases develop slowly in our body and may last for a lifetime. Chronic diseases are sometimes fatal.
Explanation:
Hope you could understand.
If you have any doubt, feel free to ask.
Selects all of the BENEFITS of a PARALLEL circuit. (Lesson 5.09)
A If one bulb burns out the rest of the bulbs will stay lit.
B The bulbs do not get dimmer when we add more bulbs to the circuit.
C The circuits are more complex and expensive.
D The circuits use less wire.
Answers
Answer:
c and b
Explanation:
Explain what is wrong with the cells shown in the image below.
Answers
Answer:
wrong answer
Explanation:
it doesn't show any thing that why its wrong
Which of the following best explains the importance of Earth’s crust to living organisms? a. The continental crust allowed the evolution of life on land. B. The crust provides raw materials necessary for life. C. The crust allowed the formation of fossil fuels. D. The rock cycle recycles sedimentary rocks formed from animal shells. Please select the best answer from the choices provided A B C D.
Answers
The statement 'the crust provides raw materials necessary for life' best describes the interaction between Earth's crust and organisms. It is fundamental for the biogeochemical cycles.
Earth's crust consists of a tiny layer on the outside of Earth that accounts for less than one percent (1%) of Earth's volume.
The Earth's crust is essential in biogeochemical cycles that support the continuity of life on the Earth planet.
These biogeochemical cycles include, among others, the carbon cycle, nitrogen cycle, phosphorous cycle, etc.
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4. Using the Celsius scale, at what temperature does water freeze? At what temperature does water boil?
Answers
Answer:
Using celsius water freezes at 0, and water boils at 100.
Explanation: That is the purpose of the celsius scale to measure between those two points.
i can't see to figure out which one, if you do; please don't mind helping me out
Answers
Answer:
I believe that they are both C
The equator has light closer to 90 degrees, at the poles the angle is lower than 90 degrees. Use this information and refer to the data from Table B to explain why the tropics (near the equator) are hotter than the arctic region (north/south poles). Be sure to include data from Table B in your answer.
Answers
The temperature at tropic region is warmer than the polar temperatures due to angle of the sun.
The tropics which is located near the equator are hotter than the arctic region i.e. north and south poles because the sunlight falls directly on the tropic regions at 90 degrees while on the other hand, the sunlight falls on the poles not directly and form angle lower than 90 degrees.
The amount of solar energy in a given area is greater at the equator and tropic regions than in an equal area at the poles so that's why the temperature at tropic region is warmer than the polar temperatures.
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Can you use cheetahs to represent Photosynthesis or Cellular Respiration?
Answers
The last woman scientist discovered one gene that is unique in human, and she called it an Eureka moment. How many letters are different in that gene if you compare the chimp version with the human version
Answers
Only one letter is different between the human gene and the chimpanzee gene.
What is a gene?
A gene is a term to refer to the molecular unit of genetic inheritance that is composed of deoxyribonucleic acid, that is,
A sugar group. A phosphate group. A nitrogenous base. Guanine (G) Cytokine (C) Thymine (T) Adenine (A)
Man and chimpanzee share 99% of their genes. However, there are important genetic differences for us to be a different species from chimpanzees. Well, the change of a single nitrogenous base and differentiates the gene of a chimpanzee from the gene of a human.
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Having dimples (D) is dominant over not having dimples (d). A dimpled woman (whose father had no dimples and whose mother did have dimples) marries a man whose mother had no dimples, whose father had no dimples, and whose grandparents on his father’s side did have dimples!
What is the father's genotype?
A)DD
B)Dd
C)dd
Answers
Answer:
C
Explanation:
if he had the traits DD or Dd he would have dimples
In the kidneys, the countercurrent mechanism involves the interaction between the flow of filtrate through the nephron loop of the juxtamedullary nephrons (the countercurrent multiplier) and the flow of blood through the limbs of adjacent blood vessels (the countercurrent exchange
a. True
b. False
Answers
SOMEONE PLEASE HELP!!!!!
Five similarities and differences between a prokaryote and a eukaryote cell.
Answers
Answer:
Prokaryotic Cell Eukaryotic cell
Mitochondria absent Mitochondria present
Cytoskeleton absent Cytoskeleton present
Ribosomes smaller Ribosomes larger
Explanation:
two types of cells are found in the organisms: eukaryotic and prokaryotic depending on whether cells contain membrane-bound organelles or not.
3 Question
Drag the tiles to the boxes to form correct pairs.
A fossil can reveal many characteristics and properties of the original species. Match the following
characteristics to the fossil of the once-living organism that best demonstrated the characteristic.
s
Tiles
was a predator
crawled and burrowed
walked on two legs
was a stationary organism
Pairs
Answers
First image shows a stationary organism whereas the second image indicates predator.
The first picture represents a leaf structure which is a part of plant and we know that plant is a stationary organism means it can't move from one place to another so that's why it is called a stationary organism.
While on the other hand, the second picture represents predator due to the presence of sharp teeth which helps the predators in catching and tearing of prey so we can conclude that first image shows a stationary organism whereas the second image indicates predator.
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Answer:
1. walked in two legs
2. crawled and burrowed
3. was a stationary organism
4. was a predator
Explanation:
PLEASE label this image pleasee
Answers
Answer:
dk
Explanation:
because it's dk u need to add dekk and yes it's uesful
WILL GIVE BRAINLIEST IF CORRECT! I NEED HELP
Answers
principles of originally horizontally is number 3
law of superstition is number 2
principles of cross-cutting relationships is number 1
For each offspring genotype in the Punnett square you just completed, determine the phenotype. In other words, what is the predicted fur color and eye color of the offspring? Using your Punnett square from the last step, fill in the predicted fraction for each phenotype in the data table below.
Black Fur and Black Eyes Black Fur and Red Eyes White Fur and Black Eyes White Fur and Red Eyes
Predicted Fraction
/16
/16
/16
/16
Answers
Assuming diallelic genes, expressing complete dominance and not interacting, the predicted fractions are 4/16 Black Fur, Black Eyes - 4/16 Black Fur, Red Eyes - 4/16 White Fur, Black Eyes - 4/16 White Fur, Red Eyes
Available data:
Two traits are involved in this cross ⇒ fur color and eye color.Black fur color is dominant over white fur colorBlack eyes is dominant over red eyesThe cross is between a h0m0zyg0us recessive parent with a dihybrid one. What can we deduct about this information?
Assuming diallelic genes coding for each trait, expressing complete dominance, and no interaction between genes, we can propose the following genotypes and phenotypes.
Genotype Phenotype
BBEE, BbEE, BBEe, BbEe Black fur, Black eyes
bbEE, bbEe White fur, Black eyes
BBee, Bbee Black fur, Red eyes
bbee White fur, Red eyes
How to perform the cross?Cross: h0m0zyg0us recessive parent with a dihybrid parent
Parental phenotypes) White fur, Red eyes x Black fur, Black eyes
Parentals genotype) bbee x BbEe
Gametes) be, be, be, be
BE, Be, bE, be
Punnett square) BE Be bE be
be BbEe Bbee bbEe bbee
be BbEe Bbee bbEe bbee
be BbEe Bbee bbEe bbee
be BbEe Bbee bbEe bbee
F1)
4/16 = 1/4 = 25% of the progeny is expected to be dihybrid, BbEe, expressing black fur and black eyes4/16 = 1/4 = 25% of the progeny is expected to be heter0zyg0us for fur color and h0m0zyg0us recessive for eye color, expressing black fur and red eyes.4/16 = 1/4 = 25% of the progeny is expected to be heter0zyg0us for eye color and h0m0zyg0us recessive for fur color, expressing white fur and black eyes.4/16 = 1/4 = 25% of the progeny is expected to be h0m0zyg0us recessive, bbee, expressing white fur and red eyes.Predicted fraction per phenotypeBlack Fur and Black Eyes ⇒ 4/16 BbEeBlack Fur and Red Eyes ⇒ 4/16 BbeeWhite Fur and Black Eyes ⇒ 4/16 bbEeWhite Fur and Red Eyes ⇒ 4/16 bbee
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Answer: look at the picture
Explanation:
Find three consecutive odd numbers whose sum is 117. Find two ways to do this.
Answers
The way I did this is I knew that 50 would be too high so I assumed it was somewhere in the 30’s or 40’s so I just tried the lowest numbers in both of them then the highest in the 30’s
What is cell membrane made up ?
Answers
The cell membrane is mainly composed of lipids. Moreover, the cell membrane also contains membrane proteins and carbohydrates.
The cell membrane:The cell membrane is a cellular structure that separates the cell from its surrounding environment.The cell membrane is mainly composed of lipids, i.e., phospholipids and cholesterol (steroids).However, the cell membrane also contains membrane proteins (both integral as peripherical proteins) and carbohydrates (i.e., glycoproteins).In conclusion, the cell membrane is mainly composed of lipids, although this structure also contains proteins and carbohydrates (glycoproteins).
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true or false? local biogeochemical cycles are isolated within their particular ecosystem and all ions and molecules remain in that ecosystem permanently.
Answers
5. Which of the following result in protein?
A. Transcription
B. Translation
C. Replication
D. Digestion
Answers
Answer:
The answer to your question is B.
15 facts about the nucleus
GIVING BRAINLY!!
Answers
your a complete diputs head are you thats so easy bro
2. the cell nucleus is the largest organelle of the cell and holds approximately 2 meters of DNA
3. The nucleus has a double membrane (the nuclear envelope) around it.
4. The nucleus contains chromosomes which are made of DNA and associated proteins called histones.
5. The nucleus contains genes that hold the information needed to make proteins.
6. The nucleus is not always in the center of the cell.
7. The DNA is also used to control gene expression through a process called transcription, where a DNA template is used to produce pre-mRNA.
8. DNA and RNA are found in the nucleus.
9. The nucleus also stores proteins and ribonucleic acid (RNA) in the nucleolus.
10. The starting point of protein synthesis which is called transcription begins in the nucleus.
11. It usually takes up about 10 percent of the cell's volume.
12. Each human cell (nucleus) contains around 6 feet of DNA which is tightly packed, but very organized with proteins.
13. The size of the Cell Nucleus can vary from one organism to another.
I ran out of time but here you go!
Which of the following is a future consequence of the use of wind energy on the environment?
It generates no greenhouse gases.
Weather affects the quality of wind.
It produces less noise than other energy.
Wind cells are used in isolated locations.
Answers
The future consequence of the use of wind energy on the environment is as follows: weather affects the quality of the wind.
What is wind energy?Wind energy is a renewable energy source that involves harnessing the wind with windmills or wind turbines to supply mechanical or electrical energy.
Although wind energy release little or no pollution into the environment, it has downsides that can affect its usage.
One future consequence of the use of wind energy on the environment is that weather affects the quality of the wind.
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Which definition is the best for “semipermeable membrane”?
It is a barrier that prevents materials from moving from one side to the other.
It is a barrier that allows materials to move freely from one side to the other.
It is a barrier with tiny openings that let some, but not all, materials pass through.
It is a barrier that helps materials move from one side to the other.
Answers
Answer:
C
Explanation:
Semi means partly
permeable means allowing liquids or gases to pass through it
Semipermeable means allowing some, but not all, liquids or gases to pass through it.
Answer:
c) It is a barrier with tiny openings that let some, but not all, materials pass through.
Explanation:
The prefix "semi-" means "some; partially". "Permeable" means "allow to pass through". Using your knowledge of the purpose of the membrane and the meaning of the word "semi-permeable", you would use context to come to the conclusion that the correct answer is c) It is a barrier with tiny openings that let some, but not all, materials pass through.
The air we breathe is mostly a mixture of oxygen and nitrogen. How do air molecules change when they reach altitudes above 100 km?
I need to make sure the answer I have is right.
Answers
As you increase in altitude, there are fewer air molecules. Due to the lower amounts of air molecules, the atmospheric pressure decreases causing the air to be harder to breath in.
