Which of the following is a scientific observation about the bird pictured
below?
Scarlet ibis
A. The pink feathers are especially beautiful.
B.The long beak helps the bird eat insects.
C.The scarlet ibis is the national bird of Trinidad.
D. The bird's features are red.

Answer:

no se wey

Explanation:

gracias por los puntos :v

Preclinical studies involves the testing of live animals. The correct option is D.

The use of biology to solve problems and the to create valuable goods is referred to as biotechnology. The most common method is genetic engineering, which allows scientists to manipulate an organism's DNA.

Clinical research, a part of biotechnology includes the following phases:

Testing live animals is a part of a preclinical trial that can involve certain vaccination, drug, medication, etc.

Thus, the correct option is D.

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The process of mitosis divides DNA equally between two daughter cells, i.e., option B is correct.

Mitosis is a way of dividing cells in which the chromosome number remains the same as in parent cells, this is why it is also referred to as equational division.

Mitosis is the process by which a cell separates its duplicated DNA, eventually separating its nucleus in half.

Thus, the correct option is B.

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From the calculations, the rate of growth of the culture is 2.88.

We apply the exponential growth problem when there is an exponential increase.

Thus, we have; P =Poe^rt

P = amount at time t

Po = amount originally present

t = time taken

r = rate of growth

1.6 × 10^6 = 16e^4r

1.6 × 10^6/16 = e^4r

1.0 * 10^5 =  e^4r

ln 1.0 * 10^5 = ln e^4r

11.5 = 4r

r = 11.5/4

r = 2.88

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The exercise reduces the levels of the low-density lipoproteins or the bad cholesterol. It is found that, the people, who exercise daily have a low level of low-density lipoproteins, and an increased level of high-density lipoprotein, which is also known as good cholesterol.

Scientific hypotheses, in general, are the premises within a given theory, which can be validated on the basis of a scientific method, contributing to the formulation of new hypotheses. In this experiment the theory says that cholesterol levels between people who exercise and people who do not exercise is different. Within this theory, the statement says that people who exercise for an hour may have lower cholesterol levels, is a hypothesis that will be confirmed or refuted after the experiment.

The dependent variable is summarized in the phenomena or factors explained or identified, because they are influenced or determined by the independent variable. In this experiment the independent variable is the performance (or not) of exercises. Exercise is what influences or determines cholesterol levels in this study. Thus, cholesterol levels are a dependent variable.

Hence, to check whether a person exercises regularly or not, the scientist can determine the cholesterol level.

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Based on the graph the region expected to have the least population growth will be Australia.

Looking at the given graph the population size of each region starts at a lower point and ends at a higher point on the graph between the years 1950 and 2050.

The change in the population also varies depending on the scale on the y-axis. Australia has the lowest scale which lies between somewhere above 10 and 50.

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Answer: I belive that the shape of a protein is determined by its primary structure (sequence of amino acids). The sequence of amino acids in a protein is determined by the sequence of nucleotides in the gene (DNA) encoding it.

Answer:

Yes, we can see it from Earth. Not the entire thing, but everywhere you look you can see the Milky Way. To see the entire thing, you would need to take a panoramic picture using huge telescopes, both on Earth and in space.

Explanation:

We're already in the Milky Way.

Answer: Impulses

Explanation: Impulses are brought together creating sensations either adding to memory or helping produce thought that translate sensations into perceptions

The Outline  of the top-down effects on bacteria in the four mesocosms is

Generally, mesocosms are defined as any outdoor experimental system that investigates the natural environment in a controlled setting and may be thought of as a mesocosm.

In conclusion, Overview of top-down influences on bacterial growth in four mesocosms

To put it another way, zooplankton is bacterivores that play a role in maintaining a healthy bacterial balance.

Fish-eating zooplankton may cause an increase in bacteria in the water.

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The domain incorporates cultural norms that directly impact sustainable development. hence, option B is correct.

The economic sphere is a social one that includes connected human behaviors and exchanges and does not exist in a vacuum. Individuals, companies, organizations, and governments can all act as economic agents.

Cultural norms are incorporated into the economic sector and have a direct effect on sustainable development. The conservation and preservation of both natural and man-made resources are the major objectives of the environmental domain.

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Viruses are organisms that share traits with both living and non-living organisms. The virus' genetic material is made up of both DNA and RNA.

A virus is an infectious microorganism made up of a nucleic acid segment (DNA or RNA) encased in a protein coat. A virus cannot multiply on its own; instead, it must infect cells and make copies of itself using the host cell's components. A virus frequently kills the host cell in the process, resulting in harm to the host organism.

Viruses have the following characteristics:

Viruses have an exterior capsule layer and a specified boundary. Only the host cells provide energy to the virus. They thrive and mature, multiplying their numbers solely within the host cells.

Viruses lack the following characteristics:

A virus is a single-celled animal with no more than one cell. In the virus, there is no internal organization. If a virus is present outside of the host environment, it does not grow, develop, or require energy. Viruses do not remove trash.

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Adapted to a specific function or condition is the definition of the word specialized. Thus, the correct option is A.

Specialized cells are cells in the body that have specific structures and functions.

Different tissue types, such as muscular tissue and nerve tissue, are formed by specialized cells working together in groups. Organs are made up of tissues that work together to accomplish a certain function in the body. The following is a list of some organs and their functions in the human body.

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The two-argument people might make for not preserving botana curus are they take a long time to grow, so it may not be worth the effort; there are organisms that are similar, and it may be expensive.

Botana curus is a precious plant because it yields Carol, a substance that can be used to treat cancer.

Curol cannot be manufactured in a lab. Botana curus grows slowly and is an endangered species, so its ability to produce large amounts of Curol is limited.

Thus, the two arguments are they take a long time to grow, so it may not be worth the effort and there are organisms that are similar, and it may be expensive.

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Answer:

7

Explanation:

Population size of 11

After 3 births

4 deaths

2 immigrations

5 emigrations

11+3-4+2-5=7

The average force vehicle experiences is 6000N.  The correct option is B.

It states that the force F is directly proportional to the acceleration a of the body and its mass.

F =ma

Given is a 2000kg vehicle travelling 30m/s takes 10s.

It takes t = 10s to come to rest, then the acceleration will be

a = velocity /time

a = 30/(10)

a = 3 m/s²

According to the Newton's second law of motion.

F = 2000 kg x 3 m/s²

F =6000 N

Thus, the average force vehicle experiences is 6000N.

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The genetic variation occurs due to induced changes to the genome from environmental factors, fertilization of two haploid gametes during gamete fusion. The correct options are D and E.

The presence of differences in gene sequences between individual organisms of a species is referred to as genetic variation. It allows for natural selection, which is one of the primary forces driving life's evolution.

The genetic variation occurs due to induced changes to the genome from environmental factors, fertilization of two haploid gametes during gamete fusion.

Thus, the correct options are D and E.

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Answer

a,d, and e

Explanation:

i did it

Answer:

it’s called the anaerobic respiration

Explanation:

The anaerobic respiration is the answer. I think it’s this because, the anaerobic respiration is supposed to help organisms be able to live in environments where there isn’t any oxygen. This is why I think that aerobic respiration should be the answer.

Answer:

enzymes don't affect the free energy of the reactants or products

Explanation:

That is, they don't change whether a reaction is energy-releasing or energy-absorbing overall. That's because enzymes don't affect the free energy of the reactants or products. Instead, enzymes lower the energy of the transition state, an unstable state that products must pass through in order to become reactants.

Yes, it is possible because making a paper fold takes far less time than making a thermal or plastic item. The gravitational force is the reason behind this.

Polystyrene, a complicated substance, is used to make thermocol. When heated to over 100°C, it changes to a liquid condition and then returns to a solid state when cooled.

A gravitational force is defined as which draws particles or bodies together.

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Answer:

because the suns mass creates a gravitational force that pulls the earth towards it

Answer:

The main difference between arachnids and crustaceans is the type of habitat they live for instance crustaceans live in an aquatic environments but archanids live on lands

See the file attached!!

i hope my handwriting is understandable...

Answer:

yes

Explanation:

The consequences of genetic drift are numerous. It leads to random changes in allele frequencies. Drift causes fixation of alleles through the loss of alleles or genotypes. Drift can lead to the fixation or loss of entire genotypes in clonal (asexual) organisms

Answer:

Your skin colour is based on millions of years of evolution depending on where your ancestors lived and their living conditions. Skin colour varies on where you live (or came from). Children will have different tones or shades of skin from their parents due to human skin colour having multiple genes. This is an example of polygenic inheritance.

Explanation:

see the picture below to see how different skin colours depend on where they live:

hope this helps:)

Answer:

This graph illustrates the change in global surface temperature relative to 1951-1980 average temperatures. Nineteen of the hottest years have occurred since 2000, with the exception of 1998, which was helped by a very strong El Niño. The year 2020 tied with 2016 for the hottest year on record since record-keeping began in 1880 (source: NASA/GISS). This research is broadly consistent with similar constructions prepared by the Climatic Research Unit and the National Oceanic and Atmospheric Administration.

The time series below shows the five-year average variation of global surface temperatures. Dark blue indicates areas cooler than average. Dark red indicates areas warmer than average.

The “Global Temperature” figure on the home page dashboard shows global temperature change since 1880. One gets this number by subtracting the first data point in the chart (-0.16°C) from the latest data point (0.85°C).

Answer:

Molecules with bigger charge or size can not pass through every membrane but other molecules can.

1. bigger size

2. bigger charge

3. electronegativity

Explanation:

Hope this helps you!