One half-life of a radioactive isotope has passed when:
a. all the parent nuclei have become daughter nuclei.
b. the number of daughter nuclei is twice the number of parent
nuclei.
c. the number of daughter nuclei is half the number of parent nuclei.
d. the numbers of parent and daughter nuclei are equal.
Answer:
C the number of daughter nuclei is half the number of parent nuclei.
Saturn is close to Polaris during some years
true or false
Saturn is not close to polaris
Polaris disappears into the horizon as seen from the equator, and is not visible from the south of the equator. Finding Polaris in the Northern Hemisphere indicates that you are aware of the direction north.
What is the importance of Polaris?Directly above Earth's North Pole is the Pole Star, or Polaris. Due to its location over the North Pole, the pole star is aligned with the earth's axis. As the sole star that is stationary, it is crucial for orientation.
It makes a fairly small circle over the course of a day since it is so close to the celestial equator. As a result, Polaris is a trustworthy indicator of north, since it always remains in nearly the same location in the sky.
Therefore, it is false that Saturn is close to Polaris during some years.
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answer :)
Harry is studying four surface features of Florida. He classifies the surface features and places them in different columns of a chart as shown below.
Surface Features
Column 1 Column 2
Sinkhole Hot springs
Caverns Geysers
Which of these titles best represents Column 2 of Harry's chart?
formed by freezing groundwater
formed by heating groundwater
formed by evaporation of groundwater
formed by chemical action of groundwater
The title that best represents Column 2 of Harry's chart is B. formed by heating groundwater
What is a Hot Spring?This refers to the geothermally heated groundwater that is formed on the surface of the earth.
Hence, we can see that from Column 2 of Harry's chart, there is the presence of Hot springs and Geysers which are both formed by heating groundwater and option B is correct.
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Answer:b
Explanation:took a test
analyze and evaluate whether the examples are likely or not likely to result in differential reproductive success.
answer asap
The examples that most likely result in differential reproductive success are height, disease-resistant, intelligence level, colorful plumage, etc.
What is Reproductive success?Reproductive success may be defined as the methodology of the demise of genes to the next generation in a manner that they similarly can pass those genes on to the next generation.
Reproductive success is the outcome of relative fitness which include two parameters such as relative survival and relative reproduction.
Reproductive success is assumed a significant determinant of gatherings that are preferred by the strategy of natural selection.
Therefore, the examples of reproductive success are clearly mentioned above.
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Some common, underlying predisposition, probably at least partly genetically based, leads to _______ in men and to somatization disorder in women.
Some common, underlying predisposition, probably at least partly genetically based, leads to anxiety disorders in men and to somatization disorder in women.
What is anxiety and symptoms?Anxiety symptoms can manifest on a physical level, such as a feeling of tightness in the chest and tremors, or on an emotional level, such as the presence of negative thoughts, worry, insecurity or fear, for example, and usually several symptoms appear at the same time.
In this case, women are twice as likely to develop anxiety as men because the cultural issue, of activities that are left to the care of the woman: care for the house, with the children, with the family, regardless of whether she works or not
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The placing of information or objects into groups based on certain similarities is_____
a biochemical analysis
b. classification
c. phylogeny
d. speciation
Answer:
B.) classification
Explanation:
In biology, classification is a way to organize living things. In science generally, this could expand to include any type of object.
EASYYYY I WILL MARK BRAINLY
Worldwide, what percentage of human water usage is the result of agricultural activity? What are some of the ways water is used in industry?
Answer:
70% fresh water is used for agriculture According to the United States Geological Survey (USGS), industrial water is used for fabricating, processing, washing, diluting, cooling, or transporting a product. Water is also used by smelting facilities, petroleum refineries, and industries producing chemical products, food, and paper products.
Answer:
In most regions of the world, over 70 percent of freshwater is used for agriculture. By 2050, feeding a planet of 9 billion people will require an estimated 50 percent increase in agricultural production and a 15 percent increase in water withdrawals.
Explanation:
Water is a critical input for agricultural production and plays an important role in food security. Irrigated agriculture represents 20 percent of the total cultivated land and contributes 40 percent of the total food produced worldwide.
Specialized cell types organized in a way that provides a specific function form.
Answer:
Tissue
Explanation:
A tissue is a collection of cells which are similar in structure and perform similar functions.
In this level a group of specialised cells stay together especially in higher plants.
Eg mesophyll layer in leaves
epidermal tissue, xylem tissue etc
Hope it helps
What were land bridges used as an explanation for?
A. Tidal forces
B. Mesosaurus fossils
C. Seafloor spreading
D. Magnetic striping on the ocean floor
SUB
During eccentric muscle contraction, the muscle __________.
Answer:gets longer as it contracts
Explanation:
If placed on the icr plan, do you want to repay your direct loans jointly with your spouse?.
No. Married borrowers are no longer permitted by law to combine their loans into a single joint consolidation loan. You must submit separate applications if you and your spouse both want to repay your loans using an income-driven repayment plan.
What is ICRR plan?
ICRRS is the name of a system that evaluates a customer's financial situation, including their liquidity, cash flow, profitability, debt profile, market indicators, industry and operational background, management skills, and other indicators, to determine whether they can repay a loan.
Your spouse's income is only taken into account under the ICR plan if you jointly filed your tax return.
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Which one of the following
molecules would be most
likely to travel by facilitated
diffusion?
A. Uncharged oxygen molecule (02)
B. a large organic molecule
C. Uncharged neon atoms (Ne)
Uncharged oxygen molecules would be most likely to travel by facilitated diffusion.
What is facilitated diffusion?Facilitated diffusion is a transport mechanism by which molecules move to both sides of biological membranes in favor of a concentration gradient.
Facilitated diffusion generally involves small molecules such as O2 and does not involve energy expenditure.
In conclusion, uncharged oxygen molecules would be most likely to travel by facilitated diffusion.
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Black coat color is dominant over white coat color in guinea pigs. in addition to coat color, rough coat is dominant over smooth coat.
b. Demonstrate a cross between a heterozygous black/homozygous smooth and homozygous white/heterozygous rough. describe the phenotypes as fractions?
shin splints usually occur on the ___ part of the ___ leg.
Shin splints usually occur on the inner part of the lower leg.
What is known as shin split?
This is the type of muscle spit that occurs to the leg due to the fact that it has undergone stress.
This is mostly seen in athletes. Continued stress on the shin bone is one of the factors that is known to cause shin split in people.
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Which of the following describes the characteristics of the offspring of a
cross between pure-breeding tall plants?
A. There is not enough information to answer the question.
B. They will all be short.
C. Some will be tall, and some will be short.
D. They will all be tall.
Please don't answer if you arent 100%
what is the deepest ocean zone called?
a. abyssal
b. intertidal
c. benthic
d. pelagic
Answer:
Pelagic
Explanation:
The deepest regions of the sea are Hado pelagic
Robert Hooke first observed cork under a microscope in jail so he named the small cubicles cells
False True
It is not true that Robert Hooke was in the jail while discovering cells.
Robert Hooke was observing cork through his microscope and saw tiny cubicles cells or boxlike cavitie which he later named as cells.
What is cell?Cell can be defined as the smallest, functional, basic and structural unit of life.
However, biologists too categorize living organisms into two different groups based on the numbers of cells they posses. These are:
Unicellular organisms: These are organisms which is made up of only one cellMulticellular organisms: These are organisms made up of two or more cellsIn conclusion, it is not true that Robert Hooke was in the jail while discovering cells. Rather, he was observing cork through his microscope and saw tiny cubicles cells or boxlike cavitie which he later named as cells.
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What are some examples of jawed vertebrate fish?
Jawed vertebrate fishes include bony fishes, sharks, rays, and skates.
Jawed fishesJawed fishes are of two classes, namely:
Chondrichthyes: the cartilaginous fishes that include sharks, rays, and skatesOsteichthyes: the ray-finned and lobe-finned fishes which include bony fishes such as tilapia, tuna, salmon, etc.More on jawed fished can be found here: https://brainly.com/question/1078864
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RNA consists of a fewer nucleotides then DNA, which is up to ______________.
11,000
13,000
12,000
14,000
RNA consists of fewer nucleotides than DNA, which is up to 12,000. Thus, the correct option is C.
What are Nucleotides?Nucleotides may be defined as molecules consisting of a nitrogen-containing base, a phosphate group, and a pentose sugar.
DNA molecules consist of more sequences of nucleotides compared to RNA molecules. Most of the RNA molecules consist of nucleotides of no more than a few thousand and up to 12,000.
Therefore, the correct option for this question is C.
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What causes the
sun's rays to hit
different parts of
earth at different
angles?
A. the curve of the earth
B. the magnetic field of the
earth
C. the distance between
the sun and the earth
D. more wind from the
equator
Answer:
B
Explanation:
B is the answer because the magnetic field of the earth attracts sun Ray's
One reason biodiversity is such an important aspect of sustainability is that it ____. Group of answer choices provides vital ecosystem services through the interactions among species and keeps any population from growing too large maintains a ready supply of new materials for water, soil, and food makes life less susceptible to constant adaptation and changing environmental conditions is the ultimate source of energy for plants increases ecotourism in less developed countries
One reason biodiversity is such an important aspect of sustainability is that it provides vital ecosystem services through the interactions among species and keeps any population from growing too large (option A).
What is biodiversity?Biodiversity refers to the number and variety of species of plant and animal life within a region.
Sustainability is the means of configuring civilization and human activity so that society, its members and its economies are able to meet their needs and express their greatest potential in the present without compromising the ability of future generations to do the same.
Biodiversity helps to ensure sustainability because it provides vital ecosystem services through the interactions among species and keeps any population from growing too large.
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why is modern view more convenient regarding mixing of blood in ventricle in frog??
Answer:
Frogs are often used in dissection when demonstrating the organ systems of a complex organism. The presence and position of the organs found in a frog are similar enough to a person to be able to provide insights into the internal workings of the human body.
the binomial effect size display is a method for illustrating the size of:
The binomial effect size display is a method for illustrating the size of: correlation coefficients.
What are correlation coefficients?This is a term that has to do with the linear interdependence that exists between sets of data.
This helps to measure the existing strength between the various variables that are used in a regression analysis.
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During meiosis, each pair of alleles on the homologous chromosomes sorts independently from all other pairs of alleles. This statement corresponds to
During meiosis, each pair of alleles on the homologous chromosomes sorts independently from all other pairs of alleles. This statement corresponds to the law of independent assortment.
What does the law of independent assortment say?
Mendel's Second Law, also known as the Law of Independent Segregation, states that the factors (alleles) for two or more traits are independently distributed during gamete formation and combine at random.
So in this case, each pair of alleles on the homologous chromosomes sorts independently from all other pairs of alleles represents Mendel's second law.
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When there are a lot of molecules in one place it is considered an area of:
When there are a lot of molecules in one place it is considered an area of high concentration.
What is an area of high concentration?The degree of concentration of an area is defined in terms of the amount of solute molecules in that particular area.
A concentration can either be high, low or even. A high concentration is that which has more solute molecules while a low concentration is that which has less solute molecules.
Therefore, it can be said that when there are a lot of molecules in one place it is considered an area of high concentration.
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Which of the following is a characteristic of a population that is in Hardy- Weinberg equilibrium? A. The gene pool gets smaller in each generation. B. The alleles mutate in every generation. C. There are equal amounts of immigration and emigration. D. The frequency of each phenotype does not change.
The gene pool gets smaller in each generation, which is the characteristic of a population that is in Hardy- Weinberg equilibrium. The correct option is A.
What is a gene pool?The gene pool encompasses all of a species' genetic diversity. The gene pool's size can change. When organisms have mutations that are passed down to the next generation, the gene pool expands.
When all of the organisms carrying a particular allele die before having offspring, the gene pool shrinks.
Thus, the correct option is A.
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Explain why the biodegradation of plastic might be more hazardous to the environment than the presence of plastic as marine debris.
Answer:
they generate a large amount of macrobiotic flora which can cause diseases to humans as well as animals
Answer:
While plastic is not generally considered biodegradable, it can be broken down by the action of photodegradation and certain microbes. The breakdown products of plastic, however, are extremely toxic to marine life and once the plastic breaks down they are free to enter into the food chain. Therefore, while plastic marine debris is hazardous and dangerous to marine organisms, the toxic breakdown products of plastics have the potential to do even more damage.
Explanation:
Sample answer :)
Animal phobias usually begin in __________, as do blood-injection-injury phobias and dental phobias.
Animal phobias usually begin in childhood, as do blood-injection-injury phobias and dental phobias.
What is a phobia?A phobia is an uncontrolled fear in an individual that may be triggered by traumatic situations.
Phobias are prohibitive to the well-being of an individual and therefore they should be medically treated.
In conclusion, animal phobias usually begin in childhood, as do blood-injection-injury phobias and dental phobias.
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Environmental degradation decrease the production. why
Environmental degradation decreases production because it obliterates the environment for the survival of plants and crop species by miscellaneous factors.
What is Environmental degradation?Environmental degradation may be characterized as the deterioration of the environment through a deficiency of natural resources such as air, water, and soil. In other words, it may refer to the obliteration of ecosystems and the termination of wildlife.
It influences productivity by cutting down forests and trees, privileging their livestock to overgraze in fertile lands and devastate its productivity, utilization of harmful chemicals in agricultural practices, farming in marginal lands, etc.
Therefore, it is well described above.
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Compare the structure of the human liver with that of the fetal pig.
The comparison between the human liver and the fetal pigs liver is that the human liver has four lobes while the fetal pigs liver has five lobes.
What is the use of the human liver?
The difference between the human liver and the liver of the fetal pigs is that the human liver has four lobes namely right, left, caudate and quadrate. Meanwhile, the liver of the fetal pig has five lobes namely right lateral, right central, left central, left lateral, and caudate.
Thus, we can conclude that the comparison between the human liver and the fetal pigs liver is that the human liver has four lobes while the fetal pigs liver has five lobes.
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