Answer: The 3.9 billion year old rock has undergone three half-lives (3.9 divided by 1.3 = 3). After 3 half-lives, 12.5% of the potassium-40 remains undecayed.
I really need 1-4 pleaseeee
Answer:
Answer below!
Explanation:
1. Genotypic ratio: 1 : 1 ( GG = 50%, Gg = 50% )
Phenotypic ratio: 1 : 0 ( Since the dominant trait always shows, the plant would only exhibit trait G, green pods = 100 % )
2. Genotypic ratio: 1 : 1 ( Rr = 50%, rr = 50% )
Phenotypic ratio: 1 : 1 ( Oval shell = 50%, round shell = 50% )
3. Genotypic ratio: 1 : 0 ( ss = 100% )
Phenotypic ratio: 1 : 0 ( short tooth = 100% )
4. Genotypic ratio: 1 : 0 ( Bb = 100% )
Phenotypic ratio: 1 : 0 ( brown eyed = 100% )
Hope this helps, good luck!
Please help I’m failing this class
Waterways can become contaminated with mercury. Mercury is an extremely harmful
chemical. If water within the Everglades National Park became contaminated with mercury.
what are some adaptations that might effect animals living there. * 5
(1 Point)
Enter your answer
I NEEEDDDDD HEEEELPPPPPPP PLEEEASE :(
Answer:
I think that the answer is B let me know if I'm wrong
brainiest PLS
Explanation:
Which theory of development do you prefer: Piaget or Erikson's stages? Why?
Answer:
Differences between Piaget and Erikson
Alternatively, Piaget examined the thought process of the child and how their brain responded to the environmental factors around them, rather than just crises. While Piaget focused on cognitive development, Erikson's thoughts were more focused on emotional development.
Explanation:
please give me brainlist and follow
Answer:
*This was my answer* the sections are actually really interesting if you read them.
I prefer Erikson's stage of development because Erickson really goes in-depth about each stage of life and how the challenges faced in those stages have a huge impact on human development. I also appreciate that he includes what would happen if those challenges weren't faced and how that could affect that person's future in the long run.
A group of students is asked to make a model of a plant cell. The group is given different objects to represent cell parts. These objects include puzzle pieces, cardboard, plastic bags, and mini solar cells. Which object could be used to represent the function chloroplasts in the model?
Text to speech
a
puzzle pieces, because they put together proteins
b
cardboard, because it helps support the plant cell
c
a plastic bag, because it stores water and other liquids
d
mini solar cells, because they capture energy from sunlight
PLEASE HELP WILL MARK BRAINLIEST
Answer:
mini solar cells is the answer.
Goats are outside living on the sides of steep mountains. They are eating the
grass and bushes that grow there. It's a clear, sunny day on the mountainside.
What is happening to the carbon dioxide in the air? Is it ONLY being released (as a
product), ONLY absorbed (as a reactant), or being released AND absorbed?
CO2 is being both released by goats in exchange for O2 and absorbed by the plants in exchange for O2, too
A trait that occurs in 900 individuals out of a total of 1,800 individuals occurs with a probability of
Answer: 0.5
Explanation:
Number of people with traits = 900
Total number of individuals= 1800
To find the probability with regards to the question, we divide the number of individuals having the traits by the total population of individuals. This will be:
= 900 / 1800
= 0.5
Photosynthesis converts
light energy to chemical
energy. Which molecules
are the end product of this
transformation of energy
Answer:
C6H12O6 + 6 O2
Explanation:
6 CO2 + 6 H2O + light → C6H12O6 + 6 O2
HELLLPPPPPPP MEEEEEE PLZZZZZZZ HURRYYYY!!!!!!!!
What is a climax community?
A.When succession is complete and biodiverse sustainability has been reached.
B.When limiting factors and interactions of organisms create balance within a community.
C.When the maximum capacity of organisms is reached within a community.
D.All of the above are correct.
Answer:
B. When limiting factors and interactions of organisms create balance within a community.
15. Normally, tumor suppressor genes inhibit the cell cycle. How do mutated tumor suppressor genes affect the
cell cycle?
Answer:
Abnormal growth of cells.
Explanation:
Mutated tumor suppressor genes result in a loss or reduction in cell function, causing the cell to grow abnormally.
Tumor suppressor genes are the genes that regulated the cell cycle and cell division. The mutated tumor suppressor genes lead to abnormal cell growth and cancers.
What are tumor suppressor genes?Tumor suppressor genes are the anti-oncogene that regulates the cell cycle and replication. MADR-2, APC, and p-53 are the tumor suppressor genes that produce proteins that regulate the growth of the cell and cell division.
The mutation in tumor suppressor genes leads to loss of the function of suppressing abnormal cell growth resulting in tumors and cancers. This list is due to an increase in the proliferation of the cells that leads to loss of cell function showing contact inhibition.
Therefore, a mutation in the tumor suppressor genes leads to uncontrolled cell growth.
Learn more about tumor suppressor genes, here:
https://brainly.com/question/18649985
#SPJ6
posidon spreding the sea legend and the real sience behind it with titonic plates
Answer:
YA
Explanation:
A low pressure system moves across an area. What kind of weather change do you think you can you expect
A low pressure system would cause storms to develop- things like increasing wind speed, higher temperatures.
Number 7 HURRY PLEASE
Answer:
C
Explanation:
fossil is most likely going to show the structure with bones not detail of the outside
11. What pushes limestone rock to the surface where it can be weathered
A.Rock cycle
B.Formation into gas and oil
C.Tectonic Earth Movements
Answer:
C.Tectonic Earth Movements
Can someone please help me!
can someone please help me on how to do this thing it is not hard i just don't get how to answer it
What types of plants live in your biome? Describe the adaptations that help the plant survive in the biome. (Give 5 examples of each)
A climbing plant wraps around a lattice structure as it grows. This is an example of which type of tropism?
Answer: I believe it is Thigmotropism.
This is thigmotropism as it is responding to touch. Since the plant cannot support itself, it wraps around the lattice structure.
The Canadian lynx and the snowshoe hare have a predator-prey relationship. You will use two sets of population data and present them in a single graph.
Using the second picture below,label the x-axis ‘‘Year of Study’’.Label the x-axis with data listed in the first picture.(pls make sure that the grid your using is same as picture two below)
Based on the sizes of the numbers for each population, create a scale on the two separate y-axes. The snowshoe hare population ranges in size from 5000 to 95000. Label the y-axis on the left side of the x-axis as “Hare population (in thousands)." Number this y-axis from 0 to 100, in intervals of 10. The lynx population ranges in size from 500 to 6000. Label the y-axis on the right side of the x-axis as "Lynx population (in thousands)." Number this y-axis from 0 to 10, in intervals of 1.
Construct a line graph using the data from the first picture below.Use a different coloured like for each population.
Give your graph a title.Create a legend for your graph so it is easy to read.
9514 1404 393
Answer:
see attached
Explanation:
This sort of graphing exercise is more easily accomplished using a spreadsheet or charting tool. The result of that effort is attached.
The second attachment is the spreadsheet containing the data and the chart. It is in "open-office" format.
describe the size of a population in these situations: Birthrate> death rate
Answer:
increasing
Explanation:
due to the ratio given in theory once somthing dies the birth of somthing else follows in either an equal or greater manner.
CAN YOU PLZ ANSWER AND STOP WASTING MY POINT NOT TO BE RUDE... i will give brain whatever it calls just answer
Its apocrine glands. Please give me brainliest?
GIVING BRAINLIEST!!!
What is an example of a community protecting Earth's resources?
A) Cattle ranchers have cut down trees to create space for their cattle.
B) A town has started getting their vegetables transported from far away.
C) A mine has burned down a forest to create room for buildings.
D) A town has started a new recycling and composting program.
Answer:
D
Explanation:
it just makes sense to me
Answer:
A town has started a new recycling and compost program.
Explanation:
Protecting earths resources, would not be by cutting down trees, burning down a forest( trees), getting vegetables from far away pollutes the car with the way they transport; but recycling helps and protects our earth.
Jayden wants to model the hydrological cycle. He puts some water in a small plastic cup, draws a line on the cup at the water level, and places the cup upright on a window sill. After three days of being undisturbed, the amount of water in the cup is below the line Jayden drew. This is an example of:
A. Transpiration
B. Evaporation
C. Condensation
D. Precipitation
As well as the bathroom, in what other room in the home is hand washing particularly important to reduce the spread of disease?
ILL GIVE BRAINLIEST IF IT'S RIGHT
What is inside an animal cell?
Answer:
Nucleus, vaculoe, cytoplasm, cell membrane
thats all I can remember
Answer:
Nucleus,cytoplasm, endoplasmic reticullum,ribosome,mitochondria,Gollgi complex,Vacoule and lysosome.
Explanation:
Nucleus - controls cell activities, contains the DNA for the cell.
Cytoplasm - supports and protects all cellular organelles.
Endoplasmic Reticulum - aids in making proteins, carries materials through the cell.
Ribosome - synthesizes proteins.
Mitochondria - breaks down sugar molecules to release energy, site of aerobic cellular respiration.
Golgi Complex - modifies proteins made by the cell, package and export proteins.
Vacuole - store food, water, metabolic, and toxic waste.
Lysosome - break down old cell parts, break down larger food molecules into smaller pieces.
HOPE IT HELPS YOU
what kind of nucleic acid is found in retroviruses?
Answer:
A retrovirus is an RNA virus that is duplicated in a host cell using the reverse transcriptase enzyme to produce DNA from its RNA genome. The DNA is then incorporated into the host's genome by an integrase enzyme. The virus thereafter replicates as part of the host cell's DNA.
differenciate between a medium and long term goal
Answer:
So Medium-term goals may take from two months to three years to achieve. Long-term goals require three or more years to achieve. And also Long-term goals may be built upon short-term goals.
Explanation:
Answer:
Medium-term goals may take from two months to three years to achieve. Long-term goals require three or more years to achieve. Long-term goals may be built upon short-term goals.
what is made when a sperm cell combines with the polar nuclei?
Answer:
Explanation:Two of the nuclei (the polar nuclei) move to the center of the embryo sac and fuse together, forming a single, diploid central cell. This central cell later fuses with a sperm to form the triploid endosperm, which will ultimately provide nourishment for the developing embryo (analogous to yolk in animal eggs).
Answer:
endosperm
Explanation:
The second fertilization results in the endosperm, which is a special tissue used to nourish the embryo.
How does the structure of chromo-
somes differ in prokaryotes and eukaryotes?
Answer:
Prokaryotic chromosomes are composed of a single, circular strand of DNA. Eukaryotic chromosomes are made up of DNA that is tightly wound around histone molecules.
Explanation:
A person’s rate of oxygen intake and carbon dioxide output are increased. Which of the following most likely happened?
a.The person went to sleep
b.The person ate some food
c.The person started running
d.The person sat down
Answer:
C. The person started running
Explanation:
Your heart rate and breathing increases dramatically during exercise. Also, none of the other answer choices make sense.
What type of mutation is shown in the DNA strand to the right given the original strand.
Original strand - A A A T T C A T T ---> mutated strand - A A T T C A T T
Group of answer choices
deletion
insertion
translocation