Which of the following is an accurate description of a scientific law?

1. A limited explanation of a phenomenon.

2. A statement or description of an observed phenomenon.

3. Simple, basic observations that have been shown to be true.

4. An in-depth explanation of the observed phenomenon.

Answer:

For me I personally really enjoy eating lemons and limes.

Explanation:

Answer:

Should be Photosynthesis

Explanation:

prove me wrong

The Stratosphere contains the Ozone Layer which protects the Earth from harmful Ultraviolet (UV) rays from the sun is referred to as a true statement.

This is a layer which is located in the stratosphere and contains a large amount of ozone hence its name. It is also responsible for the absorption of the harmful ultraviolet rays from the sun which may cause skin cancer and other medical conditions.

The ozone layer thereby acts as a protector of the earth against these types of rays and is therefore the reason why true was chosen as the correct choice.

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Answer:

The sun heats up more and is observed in the Southern Hemisphere, that is, in the Northern Hemisphere, and vice versa. The beginning of each year in astronomy is judged on the apparent motion of the Sun in the celestial sphere.

Explanation:

I hope this helps

The breathing rate of lizard will decrease in the cold condition, as the metabolic activity of the lizard decreases. The Lizard is the cold-blooded animal (poikilotherms).

Poikilotherms- Poikilothermic creatures are those that have the ability to modify their internal temperature in response to their external environment. Fish, amphibians, & reptiles are a few examples of poikilothermic creatures. Toads may change their body temperature in response to their surroundings and have a wide range of body temperatures.

Metabolic Activity- "A set of chemical events that take place in a living thing in order to sustain life" is referred to as metabolism. The entire number of biochemical processes necessary to keep an organism's cells alive is referred to as its metabolism.

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Answer:

The tough, thin outer membrane covering the bones is called the periosteum.

It dissolves many substances.

Water is used in the breakdown of molecules in metabolic processes. It will dissolve what cells use for energy and give that energy in the process.

Answer:  The correct answer is D. He created a vaccine against polio.

Explanation:   In 1954, Salk undertook a large-scale national study, enrolling over one million pediatric subjects. The next year, on 12 April 1955, he announced the results: the vaccine was both safe and efficacious. Subsequent data showed that in 1955, there were approximately 29,000 cases of poliomyelitis in the US.

In an experiment where Guinea pigs are kept at different temperatures and percent weight gain is recorded the dependent variable is the percent weight gain, while the independent variable is the temperature.

The independent variable (in this case temperature) is the variable that does not change along with other variables in the experimental conditions, while the dependent variable is modified by the independent variable.

Therefore, we can conclude that the independent variable is one that causes a change in the dependent variable, it is a cause vs effect relationship. Moreover, the control variable stays the same throughout the experiment (in this case, the time of 6 weeks).

Complete question:

Identify the independent variable and dependent variable in the following problem: Guinea pigs are kept in different temperatures for 6 weeks and percent weight gain is recorded.

Identify the Independent Variable (IV), Dependent Variable (DV), and Control Variable (CV).

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Answer:

So methylene blue when brought to a slide of human cheek cells the nucleus and phone membrane and so forth turns into genuinely visible to facilitate gazing the slide under the compound microscope.

The partial pressure of oxygen in blood leaving the tissues is 40 mm Hg. The oxygen is being used continuously in the process of cellular respiration making the oxygen's partial pressure low. The partial pressure of oxygen in the b lood is 100 mm Hg.

Answer:   They convert glucose into usable energy.

Explanation:

I TOOK THE TEST

The answers about eukaryotes and multicellular organisms are as follows:

Eukaryotes are organisms that have a membrane-bound nucleus as well as other cellular organelles.

Multicellular organisms are organisms that have many cells.

The cells are specialized and perform specific functions for the organism.

Multicellular organisms may be organized into tissues, organs, as well as organ systems.

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The hypotheses "pollutants can drastically affect global temperature" or "chlorofluorocarbons effectively alter the ozone layer" can be used to investigate two potential questions, including how pollutants might affect global warming and why chlorofluorocarbons harm the ozone layer.

A hypothesis is a proposed explanation for a phenomenon (plural: hypotheses). If a hypothesis cannot be tested by the scientific process, it cannot be referred to as a scientific hypothesis. Observations from the past that cannot be fully explained by the body of knowledge at this time often serve as the foundation for scientific ideas. Although the phrases "hypothesis" and "theory" are sometimes used synonymously, a scientific hypothesis is distinct from a scientific theory. A recognized theory that has gained shaky support and is advanced for further study is called a working hypothesis.

Therefore, we may conclude that by using the scientific method, which comprises conducting experiments to support or deny the hypothesis, hypotheses like, for example, whether pollutants may effect global warming by acting as greenhouse gases, can be solved.

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Answer:

You might have heard people talk about Einstein’s speed of light, and that it’s always the same. The part that most people leave out is that this is only true in a vacuum—when there’s no pesky molecules of air or water to slow it down. But when light moves through a more familiar medium like air, it moves more slowly due to the interactions of individual photons with the molecules in the material. In general, the more optically dense the medium, the slower the light will move. So what happens to the light when it goes from one medium to another?

Light changes speed

Imagine that you and your friends are at the beach. You all decide to swim together, so you link arms and approach the water as a straight line. As you start walking into the water, you all slow down, because it’s harder to walk through water than through air. So imagine that you approach the water at an angle relative to the shoreline. The person on the end will meet the water and slow down first, then the next person in line, then the next, until everyone is walking through the water. Because one end of the line slowed down before the other end, the line of people becomes crooked, with the people who are still on the beach at a different angle relative to the water’s edge than the people who have already entered the ocean.

Beach example diagram

You can say that the water bends the path of of each individual toward a normal line drawn perpendicularly to the shoreline, since the people still on the shore are bent further away from the shoreline than those in the water.

The same thing happens to a light ray when it moves from air to water, or from any fast medium to a slow medium: it bends toward the normal.

Light ray bending to normal diagram

Least time principle

Another way to think of this is to imagine you and your friend are racing out to a raft in the middle of a lake. You have to travel across a beach and then through the water.

Beach and raft example diagram

Your friend decides to make a beeline for the raft and runs down the beach. You know that you can run faster than you can swim, so you head toward the water at an angle so that you run for longer than you will swim.

Beach and raft example diagram with paths overlay

Sure enough, your strategy pays off, and you get to the raft first. Your friend took the shortest path in terms of distance, but you took into account the difference in speed in each medium, and took the shortest path in terms of time. That means you took the path of least time.

Light does exactly that when moving between mediums. It takes the path that will take the shortest amount of time, when you account for the difference in speed between the mediums.

For example, imagine you are looking out the window. You have air, glass, and then air again. Glass is denser than air, so the light from outside passes from a fast medium, through a slow medium and into a fast medium again. The light will take the path from outside to your eye that spends the least time

Light diffraction through glass diagram

You can also see that the rule from earlier still applies: when the light enters the glass the ray is bent towards the normal. When it leaves the glass, it is bent away from the normal, and regains the same angle as before it entered the glass.

Light diffraction through glass diagram with overlay

Consider the following

Say you’re at the aquarium, and there’s a tank that’s totally full of water, so there’s glass over the top and sides. If you stand back a little, you can see the same stingray through the top of the tank and the wall of the tank.

Aquarium refraction diagram

Because you see the light coming through the glass at two different points, you see two images of the same stingray.

The exchange reaction for the change that occurs when a potassium fertilizer is added to a humus micelle is Cation Exchange Capacity (CEC).

What are cations, which are pronounced "cat-eye-ons," first. They are positively charged ions, to put it simply. We are particularly concerned about the soil cations calcium (Ca), magnesium (Mg), potassium (K), and hydrogen (H).

The quantity of clay and/or humus in the soil affects its ability to store and exchange cations. These two negatively charged colloidal materials serve as the soil's main cation storage facility.

Sandy soils with little organic matter (OM) have a low CEC, but heavy clay soils with lots of OM have significantly higher cation-holding capacities.

Therefore, Cation Exchange Capacity is the exchange reaction for the change that happens when a potassium fertilizer is given to a humus micelle (CEC).

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Answer:

Explanation:

1. Duct type of structure conveys bile from the liver to the gallbladder.

2. When amino acids are deaminated, the immediate products are ammonia and often a keto acid.

Answer:

it tells you that the age of the fossils of the land animals is the same as the date the volcano erupted.

Explanation:

The Carrie is doing is functional fixedness.

Compassionate touch includes holding the patient's hand, massaging the patient's back, gently repositioning the patient, or engaging in conversation to improve the patient's comfort and safety, self-esteem, trust in the caregiver, and mental health. means to improve physical health. Get training from OSHA to understand how to use the MSDS.

In a caring relationship, the patient and caregiver get to know each other and both move toward a healing relationship. According to Swanson's theory, it best describes knowledge. Swanson's theory explains that knowledge is the effort made to understand an event. Select and personalize interventions that actually help patients. Nurses should try to understand relevant events in the patient's life.

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A collection of high-energy electrons that transfer energy to energy carriers generating ATP is the statement which  best describes a photosystem.

Photosystem I is an integral membrane protein complex that uses light energy to produce the high energy carriers ATP and NADPH. Light energy excites electrons in the electron transport chain in a photosynthetic unit.

Photosystem I is an integral membrane protein complex that uses light energy to catalyze the transfer of electrons across the thylakoid membrane from plastocyanin to ferredoxin. Ultimately, the electrons that are transferred by Photosystem I are used to produce the moderate-energy hydrogen carrier NADPH.

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Answer:

C -> Meiosis reduces the chromosome number

Explanation:

A -> Mitosis makes diploid cells & meiosis makes haploid cells

B -> Both go through telophase

D -> Chromatids are formed during both processes

Answer:

Probably A

Explanation:

Based on the cell theory, Alex can conclude that a particular kind of fungus called mold grows on both plants and mammals. It resembles a cluster of mushrooms under a microscope.

The roots that the stalks, or sporangiophores, are linked to enlarge as they mature into soft meals like bread. Sporangia, which create spores that launch into the air and drift to a new host to multiply, are found atop the stalks.

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Its mice share an ancestor with humans and are homologous.

The tailbone is a triangular set of bones that form the lowest part of the spine below the sacrum. The general term coccyx is used because it represents the rest of the tail. The tailbone is a triangular set of bones that form the lowest part of the spine, below the sacrum. The general term coccyx is used because it represents the rest of the tail.

The coccyx commonly known as the coccyx lies below the sacrum. Individually, the sacrum and coccyx are composed of smaller bones that fuse together and grow into a solid bone mass by age 30. The sacrum is made up of 5 fused vertebrae S1-S5 and 3-5 smaller bones fused together to form the coccyx. The tailbone helped our ancestors maintain mobility and balance, but as humans learned to walk upright, the tail shrank. The tailbone no longer serves a purpose in humans.

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Answer:

i cant see them properly,can u scan?

Explanation:

Answer:

The independent variable belongs on the x-axis (horizontal line) of the graph and the dependent variable belongs on the y-axis (vertical line). The x and y axes cross at a point referred to as the origin, where the coordinates are (0,0)

Explanation:

when one changes so does the other

Muscles work together to produce movement, as one muscle contracts, the other one relaxes, as stated in the first answer option, and this is possible, because of in our muscles, we have muscle units that allow this process, they are known as myosin and actin, which if activated (actin) with Calcium ions, produce a conformational change in this later fiber that allows myosin to join it with its previous stimulation with ATP.

The outer layer of the nucleus that separates it from the cytoplasm is the nuclear envelope. It is considered as a highly regulated barrier and is described as a double-membrane structure which is the outermost part of the nucleus. It is the passageway of molecules from the nucleus to the cytoplasm. It isolates the DNA from molecules that can cause its damage and affect its different functions.

Governments provide the legal and social framework, maintain competition, provide public goods and services redistribute income, correct for externalities and stabilize the economy.