Fraternal (dizygotic) twins come from 2 different fertilized eggs that both grow in the mother's womb. They have different DNA (2 eggs from the mother, 2 sperm from the father) and are not identical, although they often look alike.
Identical (monozygotic) twins come from one fertilized egg that has split in two. These twins share the same DNA and are completely identical.
Identical twins develop from the same egg and sperm,the embryos split and form identical twins ,they are the same sex. But some are fraternal twins, they develop with two diferent sets of sperm and eggs by the same parents. They can be from diferent, this is like having diferent babies at the same time.
some of the advantages of inorganic farming.
Answer:
With the use of pesticides, farming can be faster and it also detracts insects and weeds
Answer:
One advantage inorganic fertilizers offer is that they are fast acting. These nutrient-rich salts dissolve quickly and are immediately available to the plants depending on them to provide essential nourishment in the form of nitrogen, phosphorus and potassium.Organic fertilizers usually contain plant nutrients in low concentrations. Since many chemical/inorganic fertilizers are concentrated and very soluble, it's easier to apply too much and damage your plants. Fresh, non-composted manure can damage your plants as well, because some manure contains harmful amounts of salts
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In the reaction 6CO2 + 6H 20+C6H 120 6 + 60 2 carbon dioxide is one of the
O products.
enzymes.
elements.
catalysts.
reactants.
Give reasons for the following.
2. Energy is the fuel of life.
1. Diamond and coal are basically different forms of carbon.
1. Energy is often considered the “Fuel of Life”. Primarily, it is needed for maintaining basic
metabolism (maintenance energy). Any excess is then used for production of meat (growth)
and/or eggs (production). Fed too much energy, hens become overweight (excess growth)
leading to poor production. If fed too little energy, hens begin using protein to meet their basic
maintenance needs and egg production may be compromised. As is the case with most things
in life, balance is the key. This article is an attempt to provide a flock manager with some tools
to use when making decisions on feeding energy to a breeder flock. Some of the research
cited is not current and is in no way intended to be anything more than an example of the
thought processes that may be helpful when making difficult decisions about feeding.
Energy is essential to meet our most basic needs: cooking, boiling water, lighting and heating. It is also a prerequisite for good health – a reality that has been largely ignored by the world community.
2. Coal and diamond are two examples of carbon allotropes, where the carbon atoms are bonded together in different configurations. These structural differences result in very different material properties, such as hardness.
On its own, carbon cannot form diamonds under the surface of the Earth. Both coal and diamond are made primarily from carbon, but their chemical structures are significantly different. Coal is formed from highly impure carbon that often contains elements like oxygen, selenium, hydrogen, nitrogen and sulfur.
If all earths ice melted what will happen
What would you expect to happen if sea otters were
removed from this food web? Check all that apply.
The population of elephant seals would decrease.
The population of kelp crabs would increase.
The population of kelp would increase.
The population of sea urchins would decrease.
Answer:The population of kelp crabs would increase
Explanation:
According to the question, The population of kelp would increase.
A food web consists of all the food chains in a single ecosystem.
What is a food web give example?A food web is formed by many food chains operating together. A food web operating in a grassland. Five food chains are possible in this food web, Grass → Grasshopper → Rat → Fox.
Thus, option "B" is correct.
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Question 7 of 30
1 Point
DNA is made up of pairs of nitrogenous bases. Which of the following
nitrogenous bases is paired correctly?
O A. Adenine-guanine
O B. Guanine-guanine
O C. Guanine-cytosine
O D. Cytosine-thymine
SUBMIT
Answer:
C. Guanine-cytosine
Explanation:
a. When a person gets a stroke or heart attack, brain or cardiac (heart) muscles die. Why is this a
problem?
The stems of horsetails contain:
A. spores
B. utensils
C. silica
Two scientists do not agree on which type of grocery bag is better for the environment. The Outcome of their disagreement is most likely to be:
Answer my question , ty .
Answer:
answer is D
Explanation:
Arranging items by order or category is called ?
Answer: it is called sorting or in other words sequence order
Explanation: Already Learned This In Class
What group behavior is being displayed by the cattle grouping together?
Answer:
It is called a social behavior.
Explanation:
Group behavior is a term that expresses the manner of behavior among two or more interacting specie of organism to achieve a purpose. Various organisms show different group behaviors.
When cattle group together, they display a herding ungulates as the behavioral group. They come together to achieve a particular objective which could be for protection, survival, feeding etc. Thus forming a social group and interact among themselves.
hypothesize how many pennies you believe a floating boat made out of a piece of aluminum foil about the size of your palm could hold before sinking.
A
0 pennies
B
1- 10 pennies
C
11-50 pennies
D
Greater than 50 pennies
Our experiment was to keep one seedling set in a light place and the other set in a closed cardboard box. So my question is to explain why it is important to keep one set of seedlings in the light. I hope to get a perfect answer
Answer:
To examine the importance of light to a plant's growth.
Explanation:
To give a background to this question, I will define a key term "Photosynthesis". Photosynthesis is a compound word made up of photo (which means "light") and synthesis (which means "to put together").
It is the process by green plants use sunlight to obtain nutrients from carbon dioxide and water.
The experiment us meant to examine the effect of deprivation of sunlight on a plant's growth.
Therefore, the essence of keeping one set of seedlings in the light is to compare if there is any difference in growth between the seeding kept in the dark cupboard and that kept in the light.
This enables us to conclude whether or not light is important for the growth of a plant.
The bar chart shows the heights of pea plants grown from 500 pea seeds.What variation do the plants show?
A. Continuous variation only
B. Discontinuous variation only
C. Both continuous variation and discontinuous variation
D. Neither continuous variation and discontinuous variation
Answer:
C. Both continuous variation and discontinuous variation
Explanation:
this was the answer on my quiz a couple days ago
1. How are populations of chimpanzees affected by slash and burn agriculture? 2. Which features of chimpanzees make them more disadvantaged than other primates?
Answer:
1. Slash and Burn agriculture refers to a technique of farming that requires plants in a forest or woodland to be decimated to create a cultivable expanse of land.
Some of these plants are usually homes to wild chimpanzees. The more they are cut down, the deeper into the forests they would migrate, that's if they ever find a place like it.
2. When compared to the other primates such as monkeys, baboons, etc their larger body size, puts them at a disadvantage. This is because when they are placed in a restricted space, they need more food which in turn translates to increased height and weight.
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Many products and services were initially developed for space exploration. Which of these does NOT have a direct connection to space exploration? A. X-ray machine B. freeze-dried food C. infrared ear thermometer D. portable cordless vacuum
Answer:
freeze dried food is your answer
Answer: A x ray machine
Explanation:
there is no reason for an x ray machine for space exploration
Write a short paragraph to contrast mitosis and meiosis in terms of type of cell produced function in an organism
Answer:
Mitosis is the process of cell division to make more cells, meiosis is the process of sperm and egg cells dividing to make a baby.
Explanation:
Angelina is learning how to build circuits. She starts by connecting a light bulb to a battery with copper wires. In her studies, she reads that the current flows due to a difference in potential energy in the system. Which statement describes what is happening to cause current to flow? A. Voltage is when current flows from lower to higher potential energy. B. Voltage is when current flows from higher to lower potential energy. C. Amperes is when current flows from lower to higher potential energy. D. Amperes is when current flows from higher to lower potential energy.
Answer:
B. Voltage is when current flows from higher to lower potential energy.
Explanation:
Voltage refers to the difference in electric potential between two points. Current in the wire always flow from higher potential to lower potential due to voltage. At the electric source, voltage of current is high but when it moves through wire, the amount of current decreases when it reaches to the other end of the circuit. This is because of the resistance present inside the wire which causes heat energy and some of the current is lost.
The correct answer is option B. Voltage is when current flows from higher to lower potential energy.
What is voltage?
Voltage is the difference in charge, in this case, made by the electrons, that results in electrons flowing from a place of high concentration to one of low concentration. We call the flow of electrons current, and we measure voltage in Volts (V).
What is Amperes?It is a unit that we use to measure the intensity of the current.
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What do cells have in common
Answer:
All cells have these four parts in common: a plasma membrane, cytoplasm, ribosomes, and DNA.
Explanation:
Answer:
All cells share four common components:
a plasma membrane, an outer covering that separates the cell’s interior from its surrounding environment
cytoplasm, consisting of a jelly-like region within the cell in which other cellular components are found
DNA, the genetic material of the cell
ribosomes, particles that synthesize proteins. However, prokaryotes differ from eukaryotic cells in several ways.
In rabbits, the gene for brown fur (B) is dominant over the gene for white fur (b). What are the genetic makeups of two parent rabbits whose offspring can have only white fur?
Answer:
Probably a white rabbit and a grey ish one
Explanation:
hope this helps.
how to ecosystem services affect human sustainability
Answer:
Ecosystem services play important role in human sustainability. Ecosystem services include provisioning,regulating, supporting, and cultural.
Provisioning include production of food and water which is one of the essential requirement for human survival and provided by ecosystem in the form of plants or other animals. No food means no human life.
Regulating may include the control of disease and climate.Humans at different regions are susceptible to particular temperature and diversity in Climate provide required atmospheric condition for human survival. Climatic changes causes global warming which bring many diseases and temperature fluctuations that affect human sustainability. Diseases decreases human population and affect human susceptibility so ecosystem controls the diseases that increases chance of human survival. More diseases with no medicine may result into high mortality rate.
Supporting, such as oxygen production and nutrient cycles are important factors that support human sustainability because nutrients provide energy to humans to do work and oxygen is must for their living.
Cultural involve recreational and spiritual benefits. Recreational and spiritual benefits include regulation of physical and mental health and social interaction with other people that keeps a human healthy and happy for living a good life.
Hence, ecosystem services promote and affect human sustainability.
Can light cause changes metal
Answer:yes
Explanation:Cause metal to be semi conductor
Answer:
yesssssssss!!!!!
Explanation:
Which of the following aspects of the article is NOT
thoroughly discussed?
А
The effect of increased carbon levels on plant
life.
B.
How the cycle of seasons affects carbon
levels.
С
How carbon might contribute to an ice age.
D
How living things obtain energy from carbon.
what is population density? What is the formula for calculating population density?
Answer:
Explanation:
To calculate the population density, you will divide the population by the size of the area. Thus, Population Density = Number of People/Land Area. The unit of land area should be square miles or square kilometers.
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For children who do not have galactosemia, what are their possible genotypes for this trait?
a pedigree chart for the inherited genetic condition galactosemia
heterozygous
homozygous dominant
homozygous recessive
no inheritance for this trait
Answer:
The correct answers are "heterozygous", and "homozygous dominant".
Explanation:
Galactosemia is a condition where people are not able to process the sugar galactose. People with this condition have one gene mutated, which does not allow the proper synthesis of the enzyme that breaks down galactose. Galactosemia is inherited as an autosomal recessive genetic condition, therefore, only children that are homozygous recessive develop the condition. Children that are heterozygous or homozygous dominant, will not develop galactosemia.
Answer:
its heterozygous and homozygous dominant
Explanation:
What section of dna are used in dna fingerprinting
Answer:
Repetitive DNA sequences "minisatellites." The two major uses for the information provided by DNA-fingerprinting analysis are for personal identification and for the determination of paternity. DNA fingerprinting is based on DNA analyzed from regions in the genome that separate genes called introns.
Environmental pollution does not affect an individual’s health. Please select the best answer from the choices provided T
Answer:
False,
environmental pollution of food, water sources, air, etc can all affect individual's health it's kinda obvious that environmental pollution does affect a person health
Explanation:
hope it helps!
Environmental pollution does not affect an individual’s health, which is a false statement, as the environment has an important role in the health of the person, such as the cold environment activating different genes in people than the hot environment.
What is the significance of environmental pollution?Environmental pollution has many implications, such as the following, air and water pollution, depletion of natural resources as their number decreases due to unfavorable conditions, increased risk of diseases, decreased biodiversity, etc.
Hence, environmental pollution does not affect an individual’s health, which is a false statement, as the environment has an important role in the health of the person, such as the cold environment activating different genes in people than the hot environment.
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In a sample of double-stranded DNA, 30% of the nitrogenous bases are adenine (A).
What percentage of the nitrogenous bases in the sample are thymine (T)?
Choose 1 answer:
A. 20%
B. 30%
C. 60%
D. 70%
Answer:
30% thymine
Explanation:
If 30% of Adenine is present, it would be reasonable to assume that 30% of Thymine will be present, as the ratio between the two complementary nitrogenous bases will be roughly equal. Therefore, that leaves us with 40% between Cytosine and Guanine.
Which graph shows the presence of nitrogen-fixing bacteria in the soil
Answer:
2
Explanation:
The graph that shows the presence of nitrogen fixing bacteria in the soil would be graph 2.
Nitrogen fixing bacteria are bacteria that are capable of converting atmospheric nitrogen into plant-usable nitrogen in the soil. The conversion is done in two stages;
1. First, atmospheric nitrogen is converted into ammonia.
2. Ammonium is converted into usable nitrate
Hence, the correct graph is the one in which the amount of atmospheric nitrogen decreases with a corresponding increase in the amount of ammonia. This would indicate the conversion of nitrogen into ammonia which is the first step in nitrogen fixation by nitrogen-fixing bacteria.
Graph 2 represents the presence of nitrogen-fixing bacteria in the soil.
This is because in this graph the concentration of atmospheric nitrogen (N2) is lower and the concentration of ammonium (NH4) is higher. The nitrogen-fixing bacteria converts or fixes atmospheric nitrogen that can't be absorbed by the plants into ammonium or nitrates which can be absorbed by the plants and make necessary amino acids for the body so we can conclude that graph 2 indicates the presence of nitrogen-fixing bacteria in the soil.
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Neurotransmitters can be blocked which
disrupts the __ impulse from traveling
through the target neuron.
A. synthetic
B. electrical
C. somatic
D. chemical