Fossils of a species of bear are found in layer 5. Which layer is most likely to have organisms that lived at the same time as the bear species? O A. Layer 1 B. Layer 2 C. Layer 4 D. Layer 8​

The natural mineral form of iron oxide is called hematite  The mineral,  which contains 70% pure Fe, ranges in color from metallic dull to vivid black to steel-gray.  Thus, option D is correct.

Oxides of many significant metals are common. Iron oxides include hematite (Fe2O3), which has a ratio of two iron atoms to three oxygen atoms, and magnetite, which has a ratio of three iron atoms to four oxygen atoms. The most magnetic mineral is magnetite.

On the surface of the Earth, it is the mineral that is most common. There are numerous other applications for hematite.

It is employed in the production of pigments, polishing, heavy media separation, jewelry making, and home energization. In addition to these, it has therapeutic properties.

Therefore, hematite mineral is produced when two atoms of iron chemically combine with three atoms of oxygen.

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Answer:

Ecosystem.

Explanation:

Archaea play an important role in ecosystems with organisms that derive or produce energy from oxidation of methane. Many of Archaea are bacteria which are often a major source of methane in such environments and they can play a role as primary producers. Archaea is important for scientists because it has unique ecological roles and can also generate energy differently i.e. responsible for producing biological methane which no eukaryotes or bacteria can do that.

Answer:

D. Active transport.

Explanation:

Active transport is the method that uses the ATP's energy to move ions and molecules from one side to the other of the membrane. The elements move from a place of lower concentration to one of a higher concentration. They move against their concentration gradient, which is why they need the energy to do it. There are two types of active transport, primary and secondary.

The primary active transport is ion pumps that hydrolyze ATP using one of the phosphates of the ATP to change the pump's shape and move the elements against their concentration gradient. It uses the ATP's energy directly.

The secondary active transport does not use ATP directly. It uses the electrochemical gradient that the primary transport had created when hydrolyzing ATP to transport the ions and molecules.

Answer:

Cognitive Experience

Explanation:

The process of gathering information, organizing it and using it to adapt to the world is cognitive experience. We collect data and information by understanding it and then try to simplify/interpret in a way that's more organized and easy to understand. When we put this knowledge to the real world by utilizing it, we're using our cognitive experience from the past and applying it to the current situation.

It's like a set of mental procedures which is the way the brain sees, learns, recalls, and thinks about all the details they notice with their five senses.

Answer:

Gastrulation takes place after cleavage and the formation of the blastula and the primitive streak. It is followed by organogenesis, when individual organs develop within the newly-formed germ layers. Each layer gives rise to specific tissues and organs in the developing embryo.Cells in each germ layer differentiate into tissues and embryonic organs. The ectoderm gives rise to the nervous system and the epidermis, among other tissues. The mesoderm gives rise to the muscle cells and connective tissue in the body. The endoderm gives rise to the gut and many internal organs.

Explanation:

Answer:

i think they found a hydrocarbon ring

Answer:

d. a decrease in heart rate.

Explanation:

As the altitude rises, the number of oxygen molecules in the air decreases. Lower oxygen levels at high altitudes stimulate the release of erythropoietin (EPO), which is associated with the increased red blood cells, i.e., it enables more oxygen molecules to be transported to cells and tissues. Moreover, at high latitudes, the increased hemoglobin (Hb)–oxygen affinity helps to safeguard arterial O2 saturation and thus mitigates the effects of low oxygen concentration in arterial blood (arterial hypoxemia). Finally, oxygen extraction depends on an appropriate supply of oxygen in the blood vessels. An increased oxygen extraction occurs when there is an inadequate circulating blood volume or when the number of red blood cells decreases below the normal levels.

Answer:

fungi that makes blue cheese

Explanation:

Penicillium represents a genus of ascomycetous fungi that generate sexual spores referred to as axcospores, which form in sac-like structures named asci. Penicillium roqueforti is a filamentous fungus of this genus that is required for making blue cheese. This mold fungus (P. roqueforti) is a decomposer of organic materials that grows naturally in soils. P. roqueforti produces roquefortine C, a mycotoxin that is used as a starter culture for blue cheese production.

Answer:

Like amoeba.

Explanation:

The Physarum polycephalum respond like amoeba to the oatmeal flakes that is placed on the agar in the petri dish because it ingests solid food particles in the same way as an amoeba do and can also absorb dissolved nutrients. Physarum polycephalum feed like amoeba by using its membrane or outer layer surrounding the food particles such as oatmeal flakes and take inside the body for digestion of that food particles.

Answer:

The egg

Explanation:

When aquatic creatures evolved to walk on land, they laid eggs. One of those eggs became a chicken.

Answer:

Egg

Explanation:

According to science chicken because fusion take place first

Explanation:

the electronic microscope is used for observing

planets and stars:-False.

the electronic microscope is used for observing

microorganisms:-True.

The following statement is not true of electron microscopes: "electron microscopes can be used to view living specimens," which is in Option C, as electron microscopes use beams of electrons to produce images, and here living specimens can't be viewed.

Electron microscopes are advanced scientific instruments that use a beam of electrons to produce an image of a specimen, and the use of electrons instead of light in electron microscopy allows for a much higher resolution image, as the shorter wavelength of electrons compared to light means that the images produced by an electron microscope can be much sharper and more detailed.

Hence, the following statement is not true of electron microscopes: "electron microscopes can be used to view living specimens," which is in Option C.

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The question is incomplete, complete question is below

Which of the following statements is not true of electron microscopes

A. Electron microscopes use beams of electrons to produce an image.

B. Electron microscopes have a much higher resolution than light microscopes.

C. Electron microscopes can be used to view living specimens.

D. Electron microscopes can be used to view the internal structure of cells.

Answer:

The term for DNA bound to proteins that floats loosely in the nucleus is Chromatin

The term for DNA bound to proteins that floats loosely in the nucleus is chromatin. Thus, option D is correct.

What is DNA?

DNA is defined as deoxyribonuclic acid and it is a polymer made up of two polynucleotide chains that arranged in foiled structure to form a double helical carrying genetic information for the various processes such as growth development  functioning and reproduction.

There are four nitrogen bases of DNA nucleotides are such as adenine, thymine, guanine and cytosine. Friedrich Miescher discovered DNA in the year of 1860.

The main function of DNA is to carry information from one generation to another generation this is the reason due to which DNA is also known information molecule.

In our body DNA is found in the nucleus of the cell and it is known as nuclear DNA. The shape of DNA is double helical structure. Siblings share only about 50% of same DNA due to the reason of recombination.The life span of DNA is 521 years.

Therefore, the term for DNA bound to proteins that floats loosely in the nucleus is chromatin. Thus, option D is correct.

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Answer:

It is likely that this microorganism grows in enriched culture media.

Explanation:

As shown in the question above, the microorganism that lives in the lungs is extremely demanding. This means that this microorganism is very difficult to be cultivated in a culture medium, as it requires specific nutrients and in specific amounts to be able to develop. These microorganisms are called fastidious microorganisms and need an enriched culture medium to develop.

Enriched culture media are those that have a high range of nutrients in their composition. These culture media are highly nutritious and for this reason, they are the ideal environment for demanding microorganisms, as it can efficiently meet the needs of this organism.

Answer:

An excess of supplements fundamentally nitrogen and phosphorus-in water begins a cycle called eutrophication. Green growth feed on the supplements, developing, spreading, and turning the water green. Green growth sprouts can smell unpleasant, block daylight, and even delivery poisons now and again.

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Answer:

Structure of the Tooth

A tooth consists of enamel, dentin, cementum and pulp tissue. The portion of a tooth exposed to the oral cavity is known as the dental crown, and the portion below the dental crown is known as the tooth root.

Answer:

No

Explanation:

But they are the only part of plants that absorb water

No roots are not the only organs in a plant that needs water.

What are roots of plant?

Roots are organs of higher plants that absorbs water and mineral ions from soil. Two main type of root system is observed in plants: Tap root system and Fibrous root system. Tap root systems are found in dicotyledonous angiosperms (such as pea) and gymnosperms (such as pine) whereas Fibrous root system is mostly observed monocotyledonous angiosperms (such as wheat or rice).

The three main primary function of the roots are:

1. They anchor the plant to the soil.

2. Absorb water and mineral ions from the soil to be later used by the plant.

3. It acts as food reserve.

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Answer:

Similarity:

Amoeba and human beings require the same nutrients like carbohydrates, proteins, and fats for their growth and survival.

Difference:

1. Mode of Nutrition:

Amoeba is unicellular and microscopic, which makes it an organism that uses the Holozoic mode of nutrition. It ingests food through its cell membrane and feeds on other tiny organisms like bacteria, algae, and protozoans. On the other hand, human beings are multicellular organisms and use saprophytic and holozoic modes of nutrition. They ingest complex food materials that are broken down into simpler nutrients.

Answer:

A

Explanation:

.............................spermatophytes...........................

Answer:

approximately 8billion

Answer and Explanation:

Proteins are built using information from RNA, because proteins are made up of amino acids that are arranged in a specific sequence for each protein. This amino acid sequence is determined by RNA, which forms groups of three consecutive nucleotides, which will signal the position that each amino acid must assume to form a protein.

In summary, we can state that the DNA starts the transcription process to create the mRNA, which will have the nucleotides transported by the tRNA from the nucleus to the cell's ribosome, so that there, the nucleotides are organized in a specific sequence, forming amino acids, which will constitute the protein.

All amswers are correct on

Below are several good possible questions. Which one most closely resembles your question?

litterally choose any they all right

Answer:

b. Cross to a true breeding short plant

Explanation:

Answer:

A. cell division

Explanation:

The Kinetic Chain is an engineering concept used to describe human movement. It is used in a wide variety of clinical condition including musculoskeletal, sports medicine, neuro rehabilitation, prosthetic and orthotics.

The concept of Kinetic Chain was introduced by Franz Reuleaux in 1875. According to him overlapping segments were connected via joints and this created a system where movement ay one joint produced or affected movement at another joint in the kinetic link.

Two types of Kinetic Chain are:

Open Chain:

It is a combination of successively arranged joints in which terminal segment can move freely. Thus the distal segment of the extremity is free to move in space, example- Waving a hand

Characteristics:

- Characterized by a rotary stress pattern at the joint.

- Occur in one primary axis

- The number of simultaneously moving segment is typically limited to one.

- These types of exercises allow for more isolated muscle activation because less muscle co-contraction is used to perform the movement.

Closed Chain:

It is when the distal segment meets considerable external resistance prohibiting free movement. It is a system where neither the proximal nor the distal segment can move.

Characteristics:

- Linear stress pattern produced at the tibiofemoral joint due to axial joint loading.

- Movement at multiple joints and multiple -joint axes at hip, knee, subtalar joints.

- Simultaneous movement occurs at both segment.

The insertion and origin muscles are two different places where the bone is attached one at each end. Enthesis is the connective tissue between this attachment.

Insertion Muscles- The insertion muscles are connections to the bone via tendons. It is attached to the more movable bone.

Thus, this muscle is responsible for body movement. It is usually the distal end and has less mass.

Origin Muscles- Origin is the proximal site that stays more stable and relatively fixed during muscle contraction.

The head is a portion at the end of the origin muscle where it fixes to the bone. Some muscles can have more than one head.

Difference between two:

1. Insertion is more movable compared to Origin muscles as the former is attached to bone via tendons whereas the latter is less movable as it is attached via bone.

2. Insertion is a distal end attached to more movable bone whereas origin is proximal end attached to the less movable bone.

3. Insertion has less muscle mass whereas Origin has more muscle mass

4. Insertion moves with muscle contraction whereas Origin doesn't move during Muscle Contraction.

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Answer:

c. 56% of students were noted as having different values from their parents

Answer:

Explanation:

The percentage of students were noted as having different values from their parents are 56%.

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Answer:ribonucleic acid

Explanation:

Answer:

Inhibitory influences from neuroglia, and the absence of growth-stimulating cues.

Explanation:

Neurogenesis in adults is limited by Inhibitory influences from neuroglia, mainly from oligodendrocytes, and the absence of growth-stimulating cues that are present during fetal development. It is so hard to repair a damaged nerve because nerve cell like other cells can't divide and increase in number, they can't renew themselves. Due to no division, the nerve cells does not increase in number and therefore can't repair themselves.