organized high density communities of cells that embed themselves in self made exopolymer matrices are called

Answer:

B,C,F

Explanation:

kinetic energy is needed by the molecules in order to escape from the surface.

All the water molecules in the liquid are moving randomly due to the presence of some energy in it. Some of the molecules have more kinetic energy due to absorption of heat energy from the surrounding environment.

Due to high kinetic energy, these molecules move enough to escape the surface of the liquid. This is called boiling point. This makes the liquid become gas so we can conclude that kinetic energy is needed by the molecules in order to escape from the surface.

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Using mechanical friction when prepping will not aid in: a. Removal of resident bacteria.

Friction is described because the resistance to movement because of sliding, and all equipment devour frictional strength due to the fact their components slide in opposition to one another. Lubrication can manipulate friction in a number of those times however very often, including in engines, maximum mechanical strength is misplaced through shearing liquid lubricant films. In mechanical structures including inner combustion engines, the time period refers back to the electricity misplaced in overcoming the friction among transferring surfaces. Frictional forces, such as the traction needed to walk without slipping, may be beneficial, but they also present a great measure of opposition to motion.

Thus, option a is the correct choice.

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Answer:

Mosquito fish.

Explanation:

Another ecologically friendly methods such as mosquito fish is also used for controlling mosquito​ populations. Mosquito lays egg in the ponds so these mosquito fish feeds on the larvae of mosquito and remove or reduce the population of larvae so very less number of larvae change into adult so this method is also a very good method for controlling of mosquito and no bad effect on the environment.

Water (chemical formula H2O) is a molecule composed of two atoms of Hydrogen (H) and one atom of Oxygen (O). This composition confers to water its unique properties.

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Understanding gas and vapours in a work setting is incredibly important for workplace safety. Gas and vapours can contain noxious substances that, if exposed to, can lead to serious injury or health implications.

In order to prevent such accidents, employers must perform risk assessments in order to assess and identify any areas of risk and put in place control measures to limit them. If gas and vapours are used onsite, then suitable ventilation and extraction systems should be in place.

Employers should also ensure that their staff are aware of the potential risks associated with such substances and provide adequate training and instruction in how to work safely. Finally, employers should also check that any necessary personal protective equipment is provided and communications are in place to be able to notify relevant emergancy responders in case of an accident.

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Answer:(b)the indian ocean

Explanation:

Answer: The Indian Ocean

Explanation

The diameter of a capillary tube is 2.5135m

Capillary tubes are those with very small diameters (narrow cylindrical tubes). When these small tubes are immersed in a liquid, the liquid in the capillary either rises (or lowers) relative to the surrounding liquid level. This phenomenon is known as capillary action, and such tubes are known as capillary tubes.

Rise in capillary is given by

h = \(\frac{2\times \sigma \times cos\theta}{\rho \times r\times g}\)

σ = surface tension

ρ = density of liquid

r = inner radius

h = height

θ = contact angle made by the liquid meniscus with the capillary’s surface.

Given,

h = 1.21 cm

σ = 540 × 10 N/m

θ = 140°

ρ = 13.6 × 10³ Km

Substituting the value in equation,

h = \(\frac{2\times \sigma \times cos\theta}{\rho \times r\times g}\)

r = \(\frac{2\times 540\times10\times cos140}{13.6\times10^3\times1.21\times10^-^2\times10}\)

r = 50.27 × 10⁻¹m

d = 2.5135m

The diameter of a capillary tube is 2.5135 m.

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Answer:

Charles would be right.

Explanation:

On the Moon a person would weigh six times less than they do on Earth. This is because the Moon has one sixth the gravity of Earth.

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Answer:

Charles is right because you weigh 16.5 percent of your weight on the moon as on earth so she evelyn will weigh around 16 lbs

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Answer:

An organism's DNA affects how it looks, how it behaves, and its physiology. So a change in an organism's DNA can cause changes in all aspects of its life. Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele. Recombination also can create a new DNA sequence (a new allele) for a specific gene through intragenic recombination.

Explanation:

Answer:

true

Explanation:

T cells are important to our immune system, but they do not release antibodies. They activate B cells and cytotoxic T lymphocytes to kill cells that are infected. Therefore, D is incorrect.

Antibiotics are not produced by our immune system. They can be found in nature or synthesized in labs. Therefore, B is incorrect too.

Lymphocytes are divided into T and B cells. B lymphocytes release antibodies that will recognize pathogens and bind to them, but T cells doesn't work like that. Lymphocyts does not recognize pathogens and C is incorrect as well.

B cells create antibodies, release them and they will bind to pathogens to neutralize them. Therefore, the correct answer is A. B cells release antibodies that neutralize the pathogen.

The disadvantage of inserting herbicide-resistant gene into eggplant is that c) it may lead to increase in use of herbicides, which can have negative environmental consequences.

Use of herbicide-resistant crops is accompanied by an increase in the use of herbicides, as farmers may use more herbicides than necessary to control weeds, causing environmental pollution and the development of herbicide-resistant weeds.

19. Plant geneticists insert gene that slows down ripening into fruits like tomatoes for the purpose of: D.)Increasing shelf life of the fruits and vegetables.

When fruits and vegetables ripen, they begin to deteriorate and become  susceptible to spoilage, which reduces their shelf life.

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Myriapoda, a family of arthropods that includes creatures with several trunk segments and two pairs of walking legs per trunk section.

A class, or subclass, of arthropods, related to the hexapod insects, from which they differ in having the body made up of numerous similar segments, nearly all of which bear true jointed legs. They have one pair of antennae, three pairs of mouth organs, and numerous trachaae, similar to those of true insects. The larvae, when first hatched, often have but three pairs of legs. See Centiped, Galleyworm, milliped.

The existing Myriapoda are divided into three orders: chilopoda, Chilognatha or diplopoda, and pauropoda (see these words in the vocabulary). Large fossil species (very different from any living forms) are found in the Carboniferous formation.

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Answer:

i need the chart love

Explanation:

Answer;

A.Vinegar and soda

Explanation;

-A salt is a substance that contains a cation which is a metal ion or an ammonium ion and an anion derived from an acid. It is an ionic compound that can be formed by the neutralization reaction of an acid and a base.

Answer: it's c

Explanation:

The statement that explains how producers are dependent on consumers for their survival is "Consumers produce carbon dioxide for producers to use during photosynthesis," which is present in the option C.

The ecosystem must have both the consumer and the producer, as neither can survive if one gets eliminated from the ecosystem. The producer makes oxygen and glucose by taking the carbon dioxide that is released by the consumer, and in an ecosystem, there are many types of consumers, such as herbivores and carnivores. The consumer depends upon the producer for oxygen and food, while the producer depends upon the consumer and decomposer too.

Hence, the statement that explains how producers are dependent on consumers for their survival is "Consumers produce carbon dioxide for producers to use during photosynthesis," which is present in the option C.

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Answer:

A breeding programme for endangered animals is where endangered animals are taken from their natural habitats in the wild and bred together in captivity to stop them going completely extinct. For example in the UK, beavers were endangered until they were entered into a breeding programme and eventually, successfully, reintroduced to their natural habitats in the UK.

Explanation:

Mutations occur randomly at any place in the DNA sequence and may occur in any cell, hence option D is correct.

Any alteration in the DNA base sequence, also known as a heritable change in the genome, is referred to as a mutation.

The most frequent modification involves the replacement, insertion, rearrangement, or deletion of one or more bases. A mutant phenotype need not result from a mutation.

A mutation is a change to an organism's DNA sequence. Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations.

Therefore mutation can occur randomly.

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Nitrogen-fixing bacteria play a vital role in the cycling of nitrogen through ecosystems.

These bacteria assist in converting atmospheric nitrogen into forms of nitrogen that other organisms can utilize, for example, nitrates and ammonia.Why do ecosystems need nitrogen?Plants need nitrogen to make chlorophyll, a green pigment found in the leaves of plants that assists in photosynthesis.

Nitrogen also aids in the creation of proteins and nucleic acids, both of which are important for growth and reproduction.Nitrogen is a part of many organic compounds in an ecosystem. Nitrogen is required for nucleic acids (DNA), proteins, amino acids, and other organic molecules.

Plants and animals both need it to function properly. As a result, nitrogen is essential for ecosystems to function correctly. Nitrogen-fixing bacteria assist in making this available nitrogen available to other living organisms.

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Answer:

Some of the characteristics of fungi are it is a

- unicellular and multicellular

-  has protective cell wall

-  doesn't do photosynthesis

- has a nucleus to store DNA

Mosses produce root-like structures called rhizoids.

These structures are not true roots, as they do not have the same specialized tissues for nutrient uptake and water absorption that true roots have. Instead, rhizoids anchor the moss to the substrate and absorb water and nutrients from the surrounding environment.

Rhizoids are generally single-celled and do not have a protective covering, making them more vulnerable to desiccation than true roots. Despite their limitations, however, rhizoids are crucial for the survival of mosses, as they allow the plants to maintain their position and access the resources they need to grow and reproduce.

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Neanderthals demonstrated several features that indicate cold adaptation, including robust body structure, large nasal cavities, and specialized cranial features.

Neanderthals, an extinct species of humans, inhabited regions with cold climates during the Pleistocene era. Their physical features indicate adaptations to survive in such environments. Firstly, Neanderthals had a robust body structure with stocky builds and shorter limbs, which helped them retain body heat in colder conditions. This body shape reduced the surface area-to-volume ratio, minimizing heat loss.

Secondly, Neanderthals had large nasal cavities, which are believed to have been advantageous in cold environments. The increased nasal volume allowed for the warming and humidification of cold, dry air before it reached the lungs, reducing the risk of respiratory issues caused by inhaling cold air.

Lastly, Neanderthals possessed specialized cranial features, such as a prominent brow ridge and a low, elongated skull. These features may have helped protect their faces and brains from the harsh elements, including cold temperatures and physical stress.

Together, these adaptations suggest that Neanderthals were well-suited to survive in cold climates by minimizing heat loss, protecting their respiratory systems, and providing physical protection. These cold adaptations were likely beneficial for their survival in the challenging environments they inhabited during their existence.

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The given question is incomplete as it lacks the group of statements require to answer from, however, the correct group of statements is as follows:

A. She should use scientific investigation because she will need to analyze the results.

B. She should use technological design because she will need to design an experiment.

C. She should use scientific investigation because she will need to communicate her findings.

D. She should use technological design because she will need to build a prototype.

Answer:

The correct answer would be - option D. She should use technological design because she will need to build a prototype.

Explanation:

Rachel wants to develop a remote-operated lamp that can work by controlling by remote for that she needs to make a prototype to understand the technology and technical aspect of the product she wanted to develop.

Prototypes are technical designs or pictures that help in understanding the problems earlier about the product and can be solved by avoiding such issues in early models or protoptypes.

Answer:

Get a smart bulb from best buy

Explanation:

Answer:

a animal cell it tiny little pieces in the animal bodies

Answer:

Postzygotic barrier

Explanation:

The reason why the species died due to genetic difference or genetic variation after the species produced zygote and begins to develop was because of what is called POSTZYGOTIC BARRIER.

POSTZYGOTIC BARRIER is a barrier or otherwise obstacles that does not allow offspring that are fertile and capable of producing a specie to form by preventing the formation after the species has begin to develop which is the development stage thereby making the already formed species to die.

Answer:

non living things

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