Answer: Bismuth-209
Explanation:
Answer:
Bismuth-209 (209Bi) is the isotope of bismuth with the longest known half-life of any radioisotope that undergoes α-decay (alpha decay). It has 83 protons and a magic number of 126 neutrons, and an atomic mass of 208.9803987 amu (atomic mass units). Primordial bismuth consists entirely of this isotope.
Explanation:
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As unwinding of the helix occurs during DNA replication, tension referred to as ________ is created ahead of the replication fork. This tension is relieved by the action of ________.
As unwinding of the helix occurs during DNA replication, tension referred to as supercoiling; is created ahead of the replication fork. This tension is relieved by the action of DNA gyrase.
DNA replication, as used in molecular biology, is the biological process that creates two identical copies of DNA from a single original DNA molecule. All living things replicate their DNA, which is the primary mechanism for biological heredity.
This is necessary for cell division during tissue development and repair, and it also guarantees that each new cell gets a copy of the DNA. DNA replication is necessary because the cell's ability to divide makes it different from other organisms.
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Which development plan would cause the least harm to the existing forest ecosystem?
A. Spread the houses out evenly so that there is as much forest as possible between each of the houses
B. Place the houses close together and use the remaining forest as a natural common area
C. Build some big houses on large lots and some small houses on small lots so that families with different incomes can live together
D. Build several small clusters of homes in different places so that each house will have a few close neighbors
Answer:
B. Place the houses close together and use the remaining forest as a natural common area.
Explanation:
Placing the houses close together and use the remaining forest as a natural area is the development plan that would cause little harm to the existing forest ecosystem because less area of forest will be disturbed and the remaining forest is protected from the harm. This type of development is good for both people and organisms present in the ecosystem due to little damaged of their habitat and these organisms can't be extinct from that area.
Which of these statements about the
Sun is TRUE?
A. It is the the farthest star from Earth
B. It cannot be seen from Earth.
C. It is the closest star to the Earth.
Answer: C it is the closest start to earth
Explanation:
Directions: Choose any river in the world. Conduct an internet search and list the following information on your river.
1. Name of river, its source (beginning of river), and outlet (where the river flows to)
2. Location of the source (state, county, country, etc.) and its watershed (flow pattern). Include states or areas the river flows through, including major cities or lakes
3. Direction the river flows, names of tributaries that join the river
4. Names of any structures that affect the river's flow (dams, levees, etc.)
5. What is the condition of the water in the river? List and describe any environmental concerns.
Please help!!
In India, state Uttarakhand At Gomukh, the end of the Gangotri Glacier, in the Himalayan Mountains, the Ganges River begins. The Bhagirathi River's crystal-clear waters are formed when this glacier's ice melts.
What is the river?The Bhagirathi River officially becomes the Ganges River when it joins the Alaknanda River as it runs over the Himalayas.
On the Ganga River, 24 dam or river barrage constructions were finished. Tehri, Haridwar, Rihand, and other well-known dams on the Ganga are only a few examples.
Therefore, one thousand times more copper parts per million are discharged in the Pandu than in unpolluted water before it ever reaches the Ganga.
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What factor(s) can affect diffusion speed?
None of the answer choices affect diffusion speed.
size of the diffused materials
shape of the diffused materials
size of the diffused materials and shape of the diffused materials
Answer:
C. Size of the diffused materials and shape of the diffused materials
Study the image.
The numbers 1 through 12 are placed around the Earth like a clock. The moon is to the left of number 4.
With the full moon at position 3, which two positions experience low tide?
3 and 5
5 and 9
6 and 12
9 and 12
Answer: The answer is 6-12
Explanation:
Lookedd up on brainly :P
Answer: The answer is 6 and 12
Explanation: I did the test! :D
Which of the following has no effect on the outcome of the host-parasite relationship?
A. The number of parasites on or in the host
B. The virulence of the parasite
C. The defenses of the host
D. All of these have an effect on the outcome of the host-parasite relationship.
Answer:
C. The defenses of the host
Which of the following is a non metal that remains liquid at room temperature?
A. Phosphorous
B. Bromine
C. Chlorine
D. Helium
Answer:
B. BromineExplanation:
Bromine is the only non-metal which is liquid at room temperature.
Answer:
B
Explanation:
B. Bromine is a non-metal that remains liquid at room temperature.
It is a halogen, with the atomic number 35, and its chemical symbol is Br.
It is a highly reactive element and is typically stored in sealed containers to prevent evaporation. It is reddish-brown in color and has a strong, unpleasant odor. At room temperature, bromine is a dense liquid that is denser than water.
Read the excerpt from How Hurricanes Form.
Hurricanes are the largest and most violent storms on Earth. They are large rotating storms with high speeds that form over warm waters. These storms are known as hurricanes in North America and the Caribbean. However, they have different names in other regions. In South East Asia, they are called typhoons. In the Indian Ocean, they are known as cyclones. Hurricane winds move at the speed of at least 74 miles per hour. They can be as wide as 300 miles. But, how are these huge storms formed?
a world map showing that hurricanes occur north of the equator in the Atlantic Ocean, cyclones occur north and south of the equator in the Indian Ocean, and typhoons occur north of the equator in South East asia
Hurricanes are often compared to engines. Just like engines, they need a type of fuel. Hurricanes form over warm ocean waters near the equator. For hurricanes, their fuel is warm, moist air. When hurricanes form, the warm, moist air above the ocean rises upward from close to the surface of the water. Because the warm air rises, it results in less air under the surface of the water. This area with less air is known as an area with low pressure.
Why do some people say that hurricanes are like engines? (2 points)
a
Both hurricanes and engines are loud when they gain power.
b
Both hurricanes and engines can cause serious destruction.
c
Both hurricanes and engines need a fuel to power them.
d
Both hurricanes and engines are often studied by scientists.
Answer:
C. Both engines and hurricanes need a fuel to power them
Explanation:
Hurricanes are often compared to engines. Just like engines, they need a type of fuel. Hurricanes form over warm ocean waters near the equator
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Complete the table to show the benefits and disadvantages of each type of reproduction. pic attached. kinda easy
1.benefit of sexual reproduction
- it provides genetic variety to the population.
2.disadvantages of sexual reproduction
- requires more time and energy
3.benefit of asexual reproduction
- can happen more quickly and with less energy
4.disadvantages of asexual reproduction
- less genetic variation in the population
Which process is responsible for causing this column of rock to form?
A. crystallization
B. deposition
C. sedimentation
D. weathering
Answer: The answer is crystallization
Explanation:
Neon (Ne) is right after fluorine (F) on the periodic table and directly above Argon (Ar). What element does Neon share more similar properties with, fluorine or Argon? Be sure to use claim, evidence and reasoning in your answer.
Answer: Argon
Explanation: They both have their outer electron shell filled, so they have no tendency to acquire or lose an electron. Therefore, they are very unreactive, a reason they are also called inert gases.
The answer is Argon as Neon shares more similar properties with it.
The similarities between them are that they both have the outer electrons shell filled and have a tendency to gain or lose electrons.
Why are the Neon and argon are in the same group?As they have the same atomic no. and same electron no. in the outer shell of their valence shells.
Thus it is clear that due to similarities between the electrons in them they are showing similar characteristics.
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A scale drawing of a car is shown below. The numbers indicate the measurements of the actual size of the car.
In which of the following units are the measurements most likely expressed?
a. kilometers (km)
b. millimeters (mm)
c. milliliters (ml)
d. grams (9)
Answer:
scale 1:30 or 130, and the answer is kilometers A
In general, the biological species concept classifies organisms as a
species.if they
O mate together successfully in nature.
O they share a common ancestor.
O have the same number of chromosomes.
O live in the same habitat and have a similar ecological role.
Answer:
mate together successfully in nature.
Explanation:
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1. Why are asteroids, comets, and meteoroids not classified as planets?
Answer: Asteroids were not considered planets because they are too small and numerous. ... Eight planets still satisfy the more rigorous definition of “planet” — a large object with an orbit that is fairly circular and within the plane of the solar system.
Explanation:
what are some negative side effects of artificial selection on corn, watermelon and peaches?
Answer:
It may lead to a lack of variety in the species.
Genetic mutations are still going to occur.
There is no guarantee that the desired traits will pass to them.
It can create genetic bottlenecks.
There may be evolutionary changes that harm both plants and the planet.
Artificial selection can even affect plants or animals outside of the intended effort.
Explanation:
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so just how did pattern on a giraffe's body increases his chances of survival
Answer:
survival of young giraffes is related to spot pattern, which might help provide camouflage from predators. ... This study revealed that newborn giraffes with larger spots and irregularly-shaped spots had increased survival during the first few months of life.
Explanation:
Which of the following is not true of biotechnology? ((NO LINKS PLEASE))
A.) Biotechnology raises ethical concerns.
B.) Biotechnology is a new branch of science.
C.) Biotechnology raises just as many concerns as it does benefits.
D.) Biotechnology is a huge part of life.
What is a long term change that happens after a flood?
A. Standing water in the streets and sewers
B. Temporary displacement of organisms
C. Permanent change in the landscape
D. Poor water quality in rivers and streams
A direct smear from a nasopharyngeal swab stained with Loeffler methylene blue stain showed various letter shapes and deep blue, metachromatic granules. The most likely identification is:
A. Corynebacterium spp.
B. Nocardia spp.
C. Listeria spp.
D. Gardnerella spp.
The identification from a direct smear from a nasopharyngeal swab stained with Loeffler methylene blue stain showed various letter shapes and deep blue, metachromatic granules: Corynebacterium spp.
Thus, the correct answer is D.
Lаborаtory tests from direct exаminаtion of swаbs or blood smeаr of Corynebacterium spp. are
Swаbs should be tаken from involved аreа of nаsophаrynx аnd, if present, underneаth membrаnesGrаm stаining will show grаm-positive rods with pleomorphic morphology. Mаny species аre club shаped and mаy be аrrаnged in pаlisаdes or v-shаped аrrаngements.Neisser or Loeffler methylene blue stаining demonstrаtes metаchromаtic grаnules (limited sensitivity)For more information about nasopharyngeal swab refers to the link: https://brainly.com/question/29819432
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How is the ocean explored?
Answer:
Hey mate......
Explanation:
This is ur answer.....
Technologies used to explore outer space and the ocean include submersibles, remotely operated vehicles (ROVs), satellites, rovers, diving/scuba gear, buoys, mega corers, water column samplers, and sonar for mapping.
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Answer: Technology such as submarines and deep diving machines are created to help search depths. Biologists and and such deep dive and put together their findings. High powered lights are required to help see at such depths, since sunlight is unable to reach the ocean floor.
Explanation: Hope this helps (^_^)
The principle of unity relates to which of the following?
O Rhythm
O Dominance
O Fragrance
O All components contribute
A student illustrates a process of cell division by creating a series of models, as shown here. Which description should the student include with the model to make it more informative and accurate?
The process of cell division is an ordered series of events involving cell growth and that produces two new daughter cells.
What stage or phase of the cell cycle does the chromosomal alignment in the centre of the cell relate to?All of the chromosomes are aligned in the metaphase plate, also known as the equatorial plane, which is situated halfway between the cell's two poles.
What distinguishes meiosis from mitosis?For somatic cells and the asexual reproduction of unicellular eukaryotic cells, mitosis is a type of cell division. The form of cell division known as meiosis is used to produce gametes during sexual reproduction.
A non-dividing cell is characteristic of which stage of the cell cycle?The interphase, which can be divided into two stages: the first gap (G1) between the final mitosis and the DNA-synthesising S phase and the second gap (G2) between the end of the S phase and the subsequent mitosis, is the time when the cell is not actively dividing (M).
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Plz help! In a density-dependent population, a decrease in which of the following will most likely cause an increase in birthrate?
Carrying capacity
Death rate
Emigration
Immigration
plz don't put link or ill report
In a density-dependent population, a decrease in the death rate will most likely cause an increase in birthrate. It is because a lower death rate means that more individuals are surviving, which can lead to an increase in the number of individuals reproducing, ultimately resulting in a higher birthrate. The correct option is B.
What is a density-dependent population?As we know that a population's birthrate tends to increase if there is a decrease in death rate, which also results in a decrease in carrying capacity.
Also, a density-dependent population is a population where the death rate increases and birthrate decreases with increasing population density, and vice versa. So, a decrease in the death rate of a density-dependent population will most likely cause an increase in the birthrate.
A density-dependent population is a population where the death rate increases and birthrate decreases with increasing population density, and vice versa. A decrease in the death rate of a density-dependent population will most likely cause an increase in the birthrate.
Therefore, the correct option is B.
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People who live in rural communities (country side) impact the ocean.
A
True
B
False
The inheritance of short wings in Drosophila fruit flies is an X-linked, recessive trait. Which would most likely result it a short-winged female mates with a long-winged male? SC. 912. L. 16. 1
оооо
All offspring will be short-winged
All females will be long-winged, and all males will be short-winged
All females will be short-winged, and all males will be long-winged
o Half of the males and females will be short-winged, and half will be long-winged
The result of a short-winged female mate with a long-winged male is all females will be long-winged, and all males will be short-winged.
Thus, the correct answer is B.
What is X-linked recessive inheritance?X-linked recessive inheritаnce is а wаy а genetic trаit or condition cаn be pаssed down from pаrent to child through mutаtions (chаnges) in а gene on the X chromosome. In mаles (who only hаve one X chromosome), а mutаtion in the copy of the gene on the single X chromosome cаuses the condition. Femаles (who hаve two X chromosomes) must hаve а mutаtion on both X chromosomes in order to be аffected with the condition.
If only the male or the female hаs the mutаted X-linked gene, the children аre usuаlly not аffected аnd аre cаlled cаrriers becаuse one of their X chromosomes hаs the mutаtion but the other one is normаl. Sons will be аffected if they inherit the mutаted X-linked gene from their females. Males cаnnot pаss X-linked recessive conditions to their sons.
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I need this answered for me please I can't get it and all together its worth 40 points
Societies may have different perspectives on the use of technology.which technological concerns is likely to be most relevant for the people living in this environment?
Answer: B, growing crops during a drought
Explanation:
The main challenge of living in a desert is the lack of food, which prompts a need for some way to irrigate crops during a time of water scarcity. Both food and water are critical for humans to survive, so the main priority is to help ensure an ample supply of those two things. Answer B satisfies this.
Although Options A and C is relevant in our modern time, for the people living in the environment plastic doesn't serve as a really helpful or useful case, especially in a survival context. Additionally, while Option C will help, it is not the most relevant detail in terms of survival. Both electric cars and plastics are luxuries.
For Option D, the taste of water is not very relevant to surviving in a desert environment. Humans need water, even if it does taste bad.
What is the effect of changing the environment on the feeding of birds with different beaks?
The exact traits of each bird's beak and the type of environmental alteration will determine how changing the environment will affect how various beaked birds eat.
For instance, birds with long, narrow beaks designed for digging deeply into blossoms or grabbing insects may have a tougher difficulty locating food if the environment gets drier and food sources become limited.
Their population might decrease as a result of this. Similarly to this, birds with short, broad beaks that are evolved to split apart seeds may have a tougher difficulty locating food if the environment becomes wetter and food sources become limited.
On the other hand, if the environment changes in a way that creates new food sources, birds with beaks adapted to exploit those resources may do well. For example, if a new type of berry becomes available, birds with beaks adapted for eating berries may thrive in that environment.
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Which of the following sets of biomes is placed in order from
most to least biologically diverse?
O Boreal forest, woodland/shrubland, tropical seasonal
forest
O Tropical rain forest, temperate seasonal forest, tundra
O Subtropical desert, temperate seasonal forest, tropical rain
forest
O Tundra, woodland/shrubland, subtropical desert
Biomes are areas with distinct climates and distinct ecosystems, characterized by certain plants and animals. The biological diversity of a biome is determined by the number and variety of organisms found there.
The following sets of biomes are placed in order from most to least biologically diverse:
Tropical Rainforest - This biome is characterized by a warm and wet climate, and is home to a wide variety of plants and animals. The dense forests and high humidity make this biome the most biologically diverse of the sets listed.
Temperate Seasonal Forest - These forests typically have four distinct seasons and are home to a wide variety of animals and plants, though not as varied as the tropical rainforest.
Woodland/Shrubland - This biome is characterized by shrubby vegetation and temperate climates. While there is a wide variety of plants and animals found in this biome, it is not as biologically diverse as the other biomes listed.
Subtropical Desert - This biome is characterized by hot, dry climates and sparse vegetation. There are a few species of plants and animals that can survive in this environment, but overall there is less biological diversity than in the other biomes.
Tundra - This biome is characterized by cold climates and low levels of vegetation. Few species of plants and animals can survive in this environment, and so it is the least biologically diverse of the sets listed.
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