Identical twins have ____________ but ______________.
A. Different DNA, come from the same sperm and egg
B. Identical environmental variation, different DNA
C. Identical DNA, come from different sperm and eggs
D. Identical DNA, different environmental variation

In the given scenario, the water will move from cell to the outside, resulting in decrease in cell size. The correct option is A.

If a container has a cell with a 10% salt solution and 90% water, and the outside concentration is 30% salt and 70% water, osmosis will occur.

Osmosis is the movement of solvent molecules (in this case, water) across a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

In this scenario, the cell has a lower salt concentration (10%) compared to the outside environment (30%).

As a result, water molecules will move from the area of lower salt concentration (inside the cell) to the area of higher salt concentration (outside the cell) in an attempt to equalize the solute concentration on both sides of the membrane.

Thus, the correct option is A.

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Answer:

Explanation:

The longest-lived animal ever discovered is a quahog clam, estimated to be 507 years old.

The answer is Option a, concentration of dissolved salt in the solution is greater than the concentration in the cells. Here the statement describes the characteristics of a hyper-tonic solution.

In comparison to another solution, a hyper-tonic solution has a higher solute concentration. The hypo-tonic solution is the opposite solution with a lower concentration. Scientists must compare the contents of cells to their surroundings. A cell is said to be hypo-tonic if it is placed in a hyper-tonic solution.

The environment is hypo-tonic, or more weakly concentrated, if the cell's cytoplasm is a hyper-tonic solution. Due to the fact that solutes and water have a tendency to diffuse or flow along gradients, this is extremely important. One solution will eventually result from the combination of two solutions.

The solutions will become isotonic when the water passes between the two solutions if the solutions are separated by a permeable barrier that only enables water to pass through. Despite having varying volumes, isotonic liquids have the same concentration.

The electrical activity of these cells relies on the positive and negative charges of the ions in the hyper-tonic solution.

Hyper-tonic Solution Examples

1. Human Kidney

The human brain contains unique proteins called osmoreceptors that are able to gauge the osmolarity of the environment surrounding the cell in order to control the amount of water in the body. Because there isn't enough water in the blood to hydrate the solutes, the environment can become a very hypertonic solution.

2. Sea Turtle Osmoregulation

Salt water is a solution that is more hyper-tonic than fresh water. This suggests that a cytosol that is more hyper-tonic than salt water is required for cells to operate. In contrast to freshwater turtles, sea turtles, for instance, live in a considerably more hypertonic environment.

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The phylum with the greatest number of different species: Generally, the Phylum Arthropoda (which includes insects, spiders, and crustaceans) has the highest number of species globally.

The most difficult phylum to find: This would depend on the specific region and habitat. Some phyla like Porifera (sponges) or Echinodermata (starfish, sea urchins) might be hard to find in a terrestrial environment because they're primarily marine.

Phyla you could not find at all: This again would depend on your location. If you're not near a body of water, you're unlikely to find any members of the Phylum Cnidaria (jellyfish, corals, sea anemones) or Phylum Mollusca (squid, octopus, snails) for example.

Animal diversity: Diversity varies greatly depending on the region. Biodiversity hotspots, such as rainforests or coral reefs, have a high level of species diversity. Conversely, more extreme environments like deserts or polar regions have less diversity.

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Answer:

Populations, species, communities, and ecosystems are all related components of the natural world. A population is a group of individuals of the same species living in the same area. Multiple populations of different species living in the same area form a community. An ecosystem is a community of living organisms and their physical and chemical environment, all functioning together as a unit.

Therefore, populations make up species, multiple species make up a community, and communities, along with their physical and chemical environment, make up an ecosystem. All of these components are interconnected and interdependent, as the interactions and relationships between individuals and species within a community affect the overall functioning and health of the ecosystem. For example, changes in population size or behavior of one species can have cascading effects on other species and the physical environment within an ecosystem.

Explanation:

Answer:

Scientific Theory

Explanation:

The statement "the characteristics of living things change over time" refers to the concept of biological evolution, which is widely accepted as a scientific theory in the field of biology. In scientific terms, a theory is a well-substantiated explanation of a natural phenomenon that is supported by extensive evidence, experimentation, and scientific consensus. The theory of evolution, proposed by Charles Darwin and further developed over time, provides a comprehensive explanation for the diversity and change in the characteristics of living organisms. It is supported by a vast body of evidence from various scientific disciplines, including genetics, paleontology, comparative anatomy, and molecular biology.

In contrast, scientific laws describe observable patterns or regularities in nature that are often expressed as mathematical equations or principles. Laws, such as Newton's laws of motion or the laws of thermodynamics, describe specific relationships or behaviors in the physical world.

Therefore, the statement about the characteristics of living things changing over time aligns with the theory of evolution, rather than being described by a scientific law.

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The function f(x) = 10 + 250x represents the total cost, in dollars, for renting a vacation house for x days.  In this case, f(10) represents the cost of renting the house for 10 days, which can be calculated as 10 + 250(10) = 2510 dollars. Option 4 is correct.

To find out what f(10) represents, we simply substitute 10 for x in the given function:

f(10) = 10 + 250(10)

f(10) = 10 + 2500

f(10) = 2510

This function can be used to calculate the total cost of renting the house for any number of days, making it a useful tool for budgeting and planning purposes. Hence option 4 is correct.

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--The complete Question is, What does f(10) represent?

The total cost f(x), in dollars, for renting a vacation house for x days is shown: f(x) = 10 + 250x --

A terrestrial ecosystem is a population of land-based species and the relationships between biotic and abiotic elements in a specific space. The tundra, taigas, temperate deciduous woods, tropical rainforests, grasslands, and deserts are a few examples of terrestrial ecosystems. A location's temperature range, average annual precipitation, soil type, and amount of light all affect the sort of terrestrial ecosystem that can be found there.

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If a mosquito bites your arm. You feel the sting, jump, and slap the mosquito the body’s organ systems that are involved are nervous system and muscular system.

The nervous system is the one that will transmit the signals through the body thanks to the brain and they will also be transmitted in the opposite way. Thanks to this we can have control of our abilities to move, think, breathe, among others. Also through the collection of sensory, heat and painful stimuli we can prevent damage to the body by responding by removing the part of the body that receives the damage through a reflex, such as hitting the mosquito when feeling the itch.

Therefore, we can confirm that if a mosquito bites your arm. You feel the sting, jump, and slap the mosquito the body’s organ systems that are involved are nervous system and muscular system.

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Answer:

1 2 4

Explanation:

The carbon cycle operates in nature that maintains the carbon composition in nature. The carbon is released into the atmosphere in the form of oxides, hydroxides and then recycle back into the atmosphere.

The carbon can be released into the atmosphere by the respiration of the animals in the form of carbon dioxide. The burning of fossil fuels and wood combustion also releases carbon into the atmosphere.

The decomposition by microbial organisms also releases carbon dioxide in the nature. The main carbon reservoir present in the atmosphere is lime stones in the oceans and in the biomass of the organisms. The carbon can be used up by the plants during the process of photosynthesis.

Therefore, The carbon cycle operates in nature that maintains the carbon composition in nature. The carbon is released into the atmosphere in the form of oxides, hydroxides and then recycle back into the atmosphere.

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Answer: A) Conduction

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Answer: 1. Energy

2. energy

Explanation:

both are energy I took the quiz

Energy is added to or removed from a substance to change its state of matter. Energy is the common factor needed in both chemical and physical change. The correct options are B and A.

Energy is an entity that is required to do every piece of work. It's of many kinds, and it is required to perform all functions of the body and all physical work. The different kinds of energy are thermal energy, kinetic energy, potential energy, etc.

When thermal energy is removed from an object, it changes its state of matter. The three states of matter are solid, liquid, and gas. When thermal heat increase, it converts into gas, and when decreases it converts into solid. To change any chemical and physical reaction, energy is required.

Thus, the correct options are B, energy, and A. energy.

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The correct statement is: With channel proteins, molecules or ions flow passively through the protein from high concentration to low concentration.

Neither channel proteins nor carrier proteins themselves flow or move in any direction. They are static structures that are embedded within the cell membrane and act as conduits or gates for the movement of specific molecules or ions across the membrane.

The movement of molecules or ions through these proteins depends on their concentration gradient. Channel proteins allow the passive flow of ions/molecules from high concentration to low concentration, while carrier proteins can facilitate both passive and active transport of molecules across the membrane. In active transport, molecules move from low concentration to high concentration, and this process requires the expenditure of energy (in the form of ATP).

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Answer:the red one

Explanation:

i just took a test on this subject yesterdsy

The Cnidarians share a few characteristics that defines them. They have radial body simmetry (with the arrangement of body parts around a central axis) and they also have tissues. They present polyphormism, and they can have two body forms (polyp or medusa). They also are diplolastic, which menas that their bodies derive from only two embryonic cell layers. The five questions of Cnidarians are Anthozoa (including corals and anemones), Schyphozoa (like the swimming jellyfish), Staurozoa (like the stalked jellyfish), Cubozoa (box jellyfish) and Hydorozoa (the hydroids and siphonophores).

Answer: ELMO

Explanation:

The speed at which molecules diffuse over dialysis tubing can be influenced and either slowed down or sped up.

In general, smaller molecules disperse faster than larger ones. The diffusion rate would be slower if the molecules attempting to pass through the dialysis tube were larger in size. On the other hand, smaller molecules will disperse more quickly.

Diffusion is greatly influenced by the concentration differential between the two sides of the dialysis tube. Diffusion will happen more quickly if there is a steep concentration gradient (a big variation in concentration). Diffusion will move more slowly if the gradient of concentration is small.

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Answer:

Both studies support the concept that species operate within a narrow optimum temperature range and are coupled to enzymatic activity.

Explanation:

The studies shown in the question above started from the same concept to establish the scientific experiment and had the same objective related to the investigation as temperature changes in the environment where these organisms live influences the enzymatic activity and, therefore, the functioning of their organism, being able to including modifying the environment around them. In summary, we can say that the studies sought to support the concept that species operate within a narrow range of optimal temperature and are coupled with enzymatic activity.

The correct option from the given question is option A) Freshwater is expected to decrease due to climate change.

Explanation:

Climate change refers to the long-term changes in the average weather patterns that have come to define Earth’s local, regional, and global climates. Climate change is primarily due to the increase in atmospheric concentrations of greenhouse gases (GHGs) produced by human activities, such as burning fossil fuels and deforestation.

Climate change has numerous consequences on the planet, including rising temperatures, sea level rise, increased frequency, and severity of extreme weather events, and changes in precipitation patterns, all of which have significant impacts on human societies and ecosystems.

Among the given options, freshwater is expected to decrease due to climate change. Climate change alters precipitation patterns, resulting in more frequent and severe droughts in some regions and increased flooding in others, resulting in water shortages. Higher temperatures and evaporation rates result in drier soils, which reduces water availability. These factors can reduce the amount of freshwater available for human consumption, agriculture, and other purposes.

A. Freshwater - all others increase

Answer:

the lungs are a pair of spongy, air-filled organs located on either side of the chest (thorax). The trachea (windpipe) conducts inhaled air into the lungs through its tubular branches, called bronchi. The bronchi then divide into smaller and smaller branches (bronchioles), finally becoming microscopic.May 23, 2019

Itching and other skin problems are signs that a cat or dog may have flea. Fleas are parasites known for their biting and blood-sucking abilities. When they bite, flea saliva enters the pet’s circulatory system, sometimes causing an allergic response commonly seen as a “hot spot” on the pet’s neck or the base of its tail.

Fleas are tiny parasitic insects that infest the fur of dogs and cats. They feed on blood and cause skin irritation that results in itching. If the problem is severe, it can lead to more significant health issues. Pet owners should watch for signs of fleas and treat their pets promptly to avoid complications. Fleas lay eggs on the skin of dogs and cats, which hatch and develop into larvae.

The larvae feed on the skin, shedding as they mature. Adult fleas emerge from the larvae, biting the host to feed on blood. The process repeats itself, with adult fleas continuing to lay eggs on the skin of the pet.The most common sign of fleas in dogs and cats is itching. Pets will often scratch themselves, bite their skin, or lick excessively to relieve the irritation.

Other signs of fleas include red or inflamed skin, hair loss, and the appearance of small, raised bumps on the skin. These bumps are often referred to as "flea dirt" and are the waste products of the fleas. In severe cases, anemia, an allergic reaction, or the transmission of other parasites or diseases can occur.

Flea infestations can be treated with a variety of products, including topical treatments, shampoos, and collars. It is essential to follow the instructions on the product label and treat the pet and the surrounding environment to eliminate the fleas. Prevention is key to avoiding flea infestations, so pet owners should maintain a regular grooming and flea prevention schedule.

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Answer:

A thermos keeps cold things cold in the same way. It doesn't contain some kind of cooling device. The same vacuum that keeps hot things hot keeps cold things cold. Heat that might otherwise transfer to the cold contents of the thermos is prevented from reaching it because of the vacuum between the thermos walls.

Today's thermoses are constructed much more sturdily than those in the past. The first thermoses featured metal exteriors with glass interior walls. These thermoses often ended up getting broken when accidentally dropped.

I think that the most dangerous time period for a patient with cystic fibrosis is;

Cystic fibrosis is a disease that results when there is a malfunctioning of the epithelial cells that line the walls of the sweat glands, lungs, digestive, and reproductive systems.

It causes the skin to taste salty. The patient suffers from shortness of breath and recurrent pneumonia.

In the graph shown, ages 35-44 seem most dangerous for patients with cystic fibrosis because that is the time when the various bacteria that affect the lungs of patients reach their peak and maintain a constant rate.

Therefore, the patients have a high rate of succumbing to the disease during this period.

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Answer:

yeah its c most probable answer

Explanation:

Answer:

Explanation:

Dominant allele are allele that finds expression the offspring physical expression while recessive allele are alleles that are not expressed in the offspring phenotype.

Answer:

A.  nutrition

Explanation:

The most likely explanation for the remainder of the variation would be nutrition. Little is known about how exactly nutrition affects genetics and heritability, but it is known that it does. Scientists believe that traits that allow a species to feed more successfully have a drastically increased chance of appearing in offspring as it greatly contributes to their survival. When a trait does not allow the species to gain the proper nutrition, the species tends to develop other traits to accomplish this which then get passed on to offspring.

Answer:

A. Nutrition

C. Precipitation

F. Temperature

The two datasets show the sudden increase in population since the millennium.

Human population growth has been a matter of concern for several years. It is a known fact that human population has been growing at an unsustainable rate since the millennium especially in developing countries.

Essentially when we talk about the population of a place we talk about the number of people that live in that place. The more the number of people in a place the greater the population of a place and population have been increasing at astronomical rate in recent times.

Looking at the datasets, we can see that, the rate of population growth since sine the 1960s has increased so much and this is quite unsustainable and somehow accounts for the population explosion that is recently occurring in many parts of the world and is leading to many intervention programs.

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