Where do scientists find pollen grains to study ancient climate change? what attribute of the pollen grains helps scientists identify the types of plants they belonged to?

Comparative advantage is the profit when the goods are produced at less cost. To increase comparative advantage the opportunity cost must be reduced.

Opportunity cost is the loss of the potential value and the benefit when an alternative resulting in the harm is chosen over another activity that should have profited.

The comparative advantage is the capacity that the goods can be produced at less cost than the other activities so that it becomes profitable.

Therefore, by lowering the opportunity cost the comparative advantage can be increased.

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Answer:

Nitrate in the soil affect photosynthesis the least

An assertation used in the speech about environment friendly can be about the present use of the paper handouts by the teachers for the tests and quizzes. Thus, option B is correct.

A claim is factual, and the valuable assertion that is used in essays is to provide the evidence in case of a dispute so that the truth is established. It is made based on textual evidence and facts.

During the counterargument or the argument, the claims are made so that the suggestion to deal with the arisen issue can be effectively solved.

Therefore, option B. use of the paper handouts will be the effective claim.

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The most serious heath concern caused by the poor sanitation and contaminated water supplies in 19th century tenements is cholera epidemic.

Cholera is a disease caused by bacteria, vibrio cholarea. The bacteria is present in water.

The symptoms of this disease are diarrhea and dehydration.

Thus, the  most serious heath concern caused by the poor sanitation and contaminated water supplies in 19th century tenements is cholera epidemic.

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Answer:

Jim Crow Laws

Explanation:

This was the sorta begining to segregation and it started because of the Jim Crow Laws.

hope this helps :)

Answer:

C.

explicit and implicit memory

Explanation:

Explicit memories, also known as declarative memories, include all of the memories that are available in consciousness.

Implicit memories are those that are mostly unconscious. This type of memory includes procedural memory.

Answer:

gelatin

Explanation:

Answer:

Explanation:

The mystery food sample ✔ does notdoescontain polysaccharides because the color of the test tube was ✔ not blue/black.

Answer:

What is the degrees of freedom when the sample size is 20?

19

For example, if we have a sample of size n = 20 items, then we calculate the degrees of freedom as df = n – 1 = 20 – 1 = 19 and we write the distribution as T ~ t19.

Explanation:

The degrees of freedom can be used to test a hypothesis about the mean.

Degrees of freedom refers to the maximum number of logically independent values that have the freedom to vary, in the data sample.

Given, the sample size is 20, then degree of freedom will be

The degrees of freedom represented as

dof = n – 1

dof = 20 – 1

dof = 19

Thus, the degrees of freedom can be used to test a hypothesis about the mean.

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Based on above scenario of their ages and cost of insurance for their age and length of policy, the total premium is said to be $2,484.

Note that in the scenario given above;

Joe annual premium is said to be = Cost for 32 year old with 15 year policy x Policy amount / 1,000

So therefore, it will be = 3.32 x 300,000 / 1,000

= $996

That of Melinda annual premium = Cost for 29 year old with 20 year policy x Policy amount / 1,000

So therefore, it will be = 4.96 x 300,000 / 1,000

= $1,488

Therefore the Total annual premium = Joe premium + Melinda premium

= 996 + 1,488

= $2,484

Therefore, the total premium would be $2,484.

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Answer:

what is the question?

Explanation:

no image, no real way to solve this problem

The increase in pressure, with volume constant will increase the temperature. The increase in volume, with pressure constant will increase the temperature. The increase in pressure, with temperature constant will decrease the volume.

These three are the characteristics of a gas. A gas is always in some pressure, having some volume and temperature.

According to the ideal gas law,

pV =nRT

Here, p is the pressure, V is the volume, n is number of moles, R is the universal gas constant and T is the temperature.

The volume of a gas is directly proportional to its absolute temperature when pressure is constant, according to Charles's law.

The volume of a gas is inversely proportional to its pressure when temperature is constant according to the Boyle's law.

Hence, the increase in pressure, with volume constant will increase the temperature. The increase in volume, with pressure constant will increase the temperature. The increase in pressure, with temperature constant will decrease the volume.

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Answer:

anatomy

Explanation:

birds' bodies is the clue

Answer:a small number of people

Explanation:

i looked it up

The option C is true, as the Roman leaders feared they were undermining authority.

Persecution is the act of harassing or oppressing a person or a group of people, especially because of their identity.

Many Christians were died or killed when the Roman government began to persecute Christians under Nero, because the Christianity was declared illegal at that time. It was believed that the Christian religion was the counter religion to the traditional Roman religion.

In Rome, the great fire was caused because of the persecution of the Christians and because of influence of Christianity in traditional Roman religion. The Christians were persecuted in the next hundred years by the upcoming emperors.

Thus, Option C is true that the Christianity was viewed as a threat to the empire.

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Answer: Its C

Explanation:

I did the test

The phrase describes the formation of the Hawaiian islands is formed due formed at a convergent boundary.

The Convergent plate boundaries is known to be subduction zones" and it is said to be the place where the Pacific Plate is said to be subducted by the North America Plate.

The phrase describes the formation of the Hawaiian islands is formed due formed at a convergent boundary.

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Willa Cather's critical essay “On the Art of fiction” is about modern literature. It depicts that young writers must condense their ideas and that a first-rate novel should include dozen of good stories.

“On the Art of Fiction”  is a book that represents the ideas and opinions of the writer on the modern literary work. She states that a true and young writer should write something new and put some condensed thoughts of their own.

According to her, a novel must have many background sacrifices that get included in the novel as good stories and should not be just pertinent and based on market demands.

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The requirement this source meet for determining accuracy is the publication uses reliable citations.

Citation is the description of the sources, that you used to write your paper, or book or article.

Citations are written on the last which provide the book name, writer's surname, and page numbers.

Thus, the correct option is b, The publication uses reliable citations.

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Answer:

it's the one that has action in it

Explanation:

verb is an action in a sentence, like run for example

Answer:

MADs are Magnetic Anomaly Detectors and the main idea behind MADs is that they follow the principle rule that objects with metallic properties get in the way of the magnetic lines of the Earth's forces. Metallic things such as submarines are normally detected using MADs. MAD development started around 1917. The function of the MADs was to identify anomalies in the Earth’s magnetic field that were caused by submarines. Later on, around 1941 in the US and Britain, there was a development of magnetic detection devices. These were meant to measure Earth’s magnetic field. So ultimately after this in 1943, MADs were now installed in ASW aircrafts. However, due to its limited range and its incapacity to detect the magnetic variances of different sources, MADs started to be used along with sonobuoys which was the opposite of what they were intended to be used for.

Explanation:

The primary concept underlying MADs, which stand for Magnetic Anomaly Detectors, is that they adhere to the general notion that things with metallic qualities obstruct the magnetic lines of the Earth's forces.

MADs are used to find metallic objects, like submarines. Around 1917, MAD development first began.

The purpose of the MADs was to locate submarine-related magnetic anomalies in the Earth's magnetic field. Later, about 1941, magnetic detecting technology developed in the US and Great Britain.

These were designed to gauge the magnetic field of the planet. As a result, MADs were eventually deployed in ASW aircraft in 1943. However, MADs have a restricted range and are unable to detect the magnetic variations of many sources.

Therefore, The primary concept underlying MADs, which stand for Magnetic Anomaly Detectors, is that they adhere to the general notion that things with metallic qualities obstruct the magnetic lines of the Earth's forces.

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Explanation:

nose peace la verdad solo sigo los pasos de la aplicación jaja

Answer:

A and C

Explanation:

The purpose of this public service announcement is to spread awareness about being protected and stay away from the sharing.

Flu also called as Influenza is the symptoms of fever, headache, muscle pain and weakness, dry cough, sore throat as well as a stuffy nose.

"spread music. not flu. even healthy people can get the flu, and it can be serious. everyone 6 months and older should get a flu vaccine. this means you. this means protect yourself, and those around you, by getting a flu vaccine."

This means that music can be spread by sharing but by sharing don't spread flu to your loved ones or friends. Take precautions till you get rid of their symptoms.

Thus, the purpose of this public service announcement is to spread awareness about being protected and stay away from the sharing.

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Answer:

Its B!

Explanation:

:D

Based on the Mohs hardness scale corundum, quartz, calcite, and gypsum are minerals listed from hardest to softest. Thus, option D is accurate.  

Minerals are inorganic compounds that have characteristic structures and physical forms. The hardness and the softness of the minerals are estimated by the Mohs hardness scale.

Hardness is the physical characteristic that defines the resistance level of getting penetrated and scratched. According to the scale, the level of hardness is corundum (9), quartz (7), calcite (3), and gypsum (2).

Therefore, option D. corundum, quartz, calcite, and gypsum are minerals listed from hardest to softest.

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Answer:

A time when I use repetition to help me remember information was whenever I had to do an assignment and they made me write a vocabulary word and its definition five times.

I don't think it was useful for me because I just remember being bored and My mind is not focused on it. So when the test came I didn't remember it from repetition I just remembered from studying.

Explanation:

Answer:

it will work

Explanation:

i dont know

Often, personal data are transmitted using digital signals which can lead to that data could be stolen.

Many online offerings require customers to fill in non-public info along with the complete name, domestic deal, and credit card number.

The statistics might be accessed or stolen. The statistics are probably stolen or accessed via way of means of stealing. Digital Signals. Digital and alerts are transmitted via electromagnetic waves.

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A digital signal encodes information as a series of discrete numbers. At any one time, a digital signal can only have one value from a finite set of possible values. Many physical quantities, such as changeable electric current or voltage, can be utilized to represent information in digital signals.

The one disadvantage of transmitting personal data using digital signals is that they are prone to loss, tampering, and other forms of destruction. If a third party manages to intercept the signal and modify it, the information may be subject to unauthorized use or disclosure.

Additionally, encryption algorithms can only protect against casual eavesdropping; they do not prevent intentional acts by malicious computer hackers (or snooping government agents).

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Based on the above, water used to produce for Food and Energy while energy production require a great deal of Water.

The term energy is known to be the ability or the power that is needed to do any kind of work.

Based on the above, water used to produce for Food and Energy while energy production require a great deal of Water as they are both essential source of energy and nutrients.

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Answer:

WATER USED IN FOOD PRODUCTION: irrigating crops, making chocolate

WATER USED IN ENERGY PRODUCTION: cooling thermal plants, running hydroelectric dams

Explanation:

just did the question, these answers are correct.

Answer:

can you put the choices

Explanation:

thanks

The claim on a bottle would meet the criteria is Blocks all UV and infrared rays. The correct option is A.

UV rays are ultraviolet rays that come from the sun. This is harmful rays which affect the skin and body.

Infrared rays have longer wavelength than visible light and UV rays have shorter wavelength than visible light.

Thus, the correct option is A, blocks all UV and infrared rays.

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