The layer of soil that contains the most organic material is called the ____ horizon.

Answers

Answer 1
Answer: The letter that best fits in the blank of the sentence, "The layer of soil that contains the most organic material is called the _____ horizon" is O. This is the horizon with three distinct organic layers: one of pine needles, one of the leaves, and one of the twigs.
Answer 2
Answer: Most organic content is present in the top most layer, i.e., The O layer. It is rich in undecomposed plant residues. The O itself stands for the word organic. It is the surface layer and also contains material from dead plants and animals.It is mainly present in forests, and is also called as forest floor.

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explain the relationship between cells, tissues, organs, and organ systems in one complete paragraph please

Answers

Many cells working together forms a tissue.  Many tissues working together forms organs. Many organs working together forms organ systems.  So it goes from general to most specific.  Organ systems are needed in order for life.  This proves that cells are the most basic units of life.
Organ system is made up of organs. Organs are made up of tissues. Tissues are made up of cells. Just like first comes world. Then, continent and so on...

If 7 indviduals of genus euglena reproduce at one time how many individuals result

Answers

Answer:

If 7 indviduals of genus euglena reproduce at one time how many individuals result 14 organisms of euglena.

Explanation:

Euglena belongs to the kingdom protista. It is a unicellular organisms which has the ability to make their own food like plants in the process of photosynthesis. Euglena reproduce through binary fission. In binary fission, the body of organisms is divided into two equal parts and each part turns into a complete organism. If 7 euglena reproduce at the same time so 14 euglena are produced.

Which three components are common to the circulatory systems of most living animals? A. arteries, veins, capillaries B. vessels, heart, circulating fluid C. aorta, ventricles, atria D. blood, heart, cavities

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The three components that are common to the circulatory systems of most living animals are: B. VESSELS, HEART, CIRCULATING FLUID.

Blood is the circulating fluid. It is the connective tissue of liquid plasma and cells.
Heart is a muscular pump to move the blood and have it circulate throughout the body of living animals.
Blood vessels are arteries, capillaries and veins that deliver blood to all tissues.

The Circulatory System has two types. They are the open circulatory system and the close circulatory system.

An open circulatory system is one where the blood does not circulate inside blood vessels  but also flows into cavities that irrigate tissues.

A close circulatory system is one where the blood circulate only inside the blood vessels.

The answer is B. vessels, heart, circulating fluid

Student measures the mass of a paper clip. The students data table is shown below. The acceptable value for the paper clips is 1.14g.Trial # Mass
1 2.45 g
2 2.40 g
3 2.42 g

which of the following best describes the students measurements

the students measurements were accurate, but not precise

the students measurements were precise, but not accurate

the measurements are neither accurate nor precise

the measurements are both accurate and precise

Answers

Answer:

Option , B, the students measurements were precise, but not accurate

Explanation:

It is given that the acceptable value for the paper clips is 1.14 grams.

An accurate value is the one which is close enough to the accurate answer and in case when the number of readings taken with in an experiment are close to each other then they are said to be precise.

Here the value obtained through three reading are close to each other hence, they are precise but none of these values is close to the acceptable value for the paper clips.

Hence, option B is correct.

I believe the correct response is that the student measurements were precise but not accurate.

How do hox genes primarily function in multicellular organisms

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The general principles of Hox gene function and logic elucidated in flies will apply to all bilaterian organisms, including humans. Drosophila, like all insects, has eight Hox genes. These are clustered into two complexes, both of which are located on chromosome

_____________ is the process whereby ice cubes(solid) is turned into water vapor(gas)

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I think it's sublimation