Help me with this. Please.

Answer:

It will take 63 years

In 189 years, one-eight of the sample will be left

By multiplying the number of half-life cycles

Explanation:

I just completed this assignment.

A scientist is studying a radioactive element that has a half-life of 63 years. It will take 63 years, In 189 years, one-eight of the sample will be left.

A radioactive element is defined as the material when it changes its atomic number or weight by emitting energy, the energy may be either Alpha, beta, or gamma forms of radiation.

Alpha is a Helium nucleus, a beta particle is an electron and a gamma is high energy electromagnetic radiation. Half-Life can be defined as the time required by which the radioactive substance to split into a different substance.

The half life  was first discovered by Ernest Rutherford and represented by the Ug or t1/2, If the radioactive element has one-hour of half-life, it means  one half of the element would decay within an hour and the remaining part would decay in another hour.

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Answer:

A saturated fat is a type of fat in which the fatty acid chains have all or predominantly single bonds. A fat is made of two kinds of smaller molecules: glycerol and fatty acids. Fats are made of long chains of carbon atoms. Some carbon atoms are linked by single bonds and others are linked by double bonds. Double bonds can react with hydrogen to form single bonds. They are called saturated because the second bond is broken and each half of the bond is attached to a hydrogen atom.

Explanation:

Answer:

saturated fats consists of single covalent bond and they are solid at room temperature and their melting point increases with increasing chain length

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Explanation:

Answer:

Peace Negotiations

After Yorktown, the Continental Congress appointed a small group of statesmen to travel to Europe and negotiate a peace treaty with the British: John Adams, Benjamin Franklin, John Jay, Thomas Jefferson and Henry Laurens.

Answer:

Prokaryotes are organisms that consist of a single prokaryotic cell. Eukaryotic cells are found in plants, animals, fungi, and protists. They range from 10–100 μm in diameter, and their DNA is contained within a membrane-bound nucleus. Eukaryotes are organisms containing eukaryotic cells.

Explanation:

Answer: B

Explanation:

Answer:

1. The problem with that was that the already poisonous water was made worse after using it to quench the flames from coke production.

2. It contaminated the soil, making it difficult for plants to grow.

Explanation:

As the author described the last stages of coke production, she explained that water was needed to quench the very hot flames from coke production. A 'bright fellow' suggested using dirty water from other parts of the mill to quench the flames from the coke production. The problems with this were;

1. The already contaminated water was made worse after it was used to quench the flames from coke.

2. Mrs. LaMendola noted that she was unable to grow her tomatoes in the path where the plumes from the oven ran. So the contaminated water negatively affected the soil.

The problem that should be already poisonous water is also made worse when it quenches the flames at the time when the production of the coke should be done.

Also, it contaminated the soil also it is difficult for growing the plants.

Since the author explained the last coke production stage so here the water required to quench that it should be very hot flames arise from the coke production. Also, the contaminated water should be worse whenever it is used for quenching the flames. Also, the contaminated water does not positively impact the soil.

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Answer:

1st line:Deforestation

2nd line:monoculture

3rd line:pollutants

4th line:Smog

5th line:Ozone layer

6th line:invasive species

All in that order for each line.

Answer:

1st line:Deforestation

2nd line:monoculture

3rd line:pollutants

4th line:Smog

5th line:Ozone layer

6th line:invasive species

All in that order for each line.

Explanation:

Answer:

Carolus Linnaeus

Explanation:

Answer:

Carolus Linnaeus

Explanation:

Answer:

C. Fungus

Explanation:

The fungi kingdom includes both single cell and multicellular organisms. Single cell organisms in the fungi kingdom include yeasts and chytrids, or fossilized fungi. Most organisms within the plant and animal kingdoms are multicellular. The Largest Single-Celled Organism.

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Answer:

C. fungus

Explanation:

Birds and animals are in the same category, and both have multiple cells.

Plants also have multiply cells.

And fungus can be single celled or multiple cells.

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Answer:

D

Explanation:

I made a 100 on the text

Two cell types in placozoans make up the endoderm tissue layer are - D) gland cells and cylinder cells.

The Placozoa a marine free-living multicellular basal form of organism. These are condisered as the simplest structure of all animals.

Thus, two cell types in placozoans make up the endoderm tissue layer are - D) gland cells and cylinder cells.

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Answer:

d. there's nothing for Soundwave to bounce off of I believe

Answer: carbon dioxide, water molecules, glucose, and oxygen

Explanation: Energy is used to convert carbon dioxide into oxygen and glucose.

Answer:

The inputs are carbon dioxide from the air and the ATP and NADPH produced by the light reactions. The cycle's output is an energy-rich sugar molecule. The Calvin cycle uses carbon from the carbon dioxide, energy from the ATP, and high-energy electrons and hydrogen ions from the NADPH.

Explanation:

The light reactions, which occur during photosynthesis, have specific inputs and outputs. The inputs of the light reactions include light energy and water. The outputs of the light reactions are ATP (adenosine triphosphate), NADPH (nicotinamide adenine dinucleotide phosphate), and molecular oxygen.

Light energy is absorbed by the chlorophyll pigments in the thylakoid membranes, while water molecules serve as a source of electrons for the photosynthetic electron transport chain.

ATP is a high-energy molecule that serves as the primary energy source for cellular processes. NADPH is a coenzyme that carries energized electrons and plays a role in the synthesis of carbohydrates during the subsequent dark reactions of photosynthesis. Molecular oxygen is a byproduct of light reactions and is released into the atmosphere as a waste product. Together, these outputs provide the energy and reduce the power needed for the synthesis of organic molecules during photosynthesis.

Therefore, the inputs of the light reactions include light energy and water. The outputs of the light reactions are ATP (adenosine triphosphate), NADPH (nicotinamide adenine dinucleotide phosphate), and molecular oxygen.

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Answer:

A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere. So i think its True

Answer:

blabkkbkkbcqcwwcqwqwwq

Explanation:

Answer:

Photosynthesis is the process of making food by green plants in the presence of sunlight.

Explanation:

During Day, sunlight enters through stomata and carbon dioxide from air and water forms glucose and oxygen. This process is photosynthesis.

Answer:

wowzerrrrrrs

Explanation:

Answer:

A compound microscope is an upright microscope that uses two sets of lenses (a compound lens system) to obtain higher magnification than a stereo microscope. A compound microscope provides a two-dimensional image, while a stereo microscope provides a three-dimensional image.  

Explanation:

They represent the parent's genotypes.

Answer:

If I'm not mistaken, the genotype ratio should be 1:2:1 and the phenotype ratio should be 3:1

Explanation:

Genotypic Ratios and Phenotypic Ratios for Punnett Squares on Y*uT*be

Answer:

they would probably go extinct

Explanation:

Answer: All substances are built from

compound

oxygen

Explanation:

All substances are built from atoms as atoms are the basic building blocks of matter and are the smallest units of a chemical element. The correct option is D.

Atoms form the basis of all compounds. The fundamental building blocks of matter, atoms are the smallest units of a chemical element that nonetheless retain that element's chemical characteristics.

Atoms from various elements combine chemically to produce compounds, however compounds themselves are not the basic building blocks.

Although oxygen is an element that is present in several substances, it is untrue to say that oxygen is the primary component of all substances.

Although metals are a specific kind of element, not all substances are made of metals. Thus, the most correct response is that all substances are composed of atoms.

Thus, the correct option is D.

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Your question seems incomplete, the probable complete question is:

All substances are built from

A. compound

B. oxygen

C. metals

D. atoms

Answer:

transcript and ribosome

Explanation:

I know this for sure

Answer:

d maybe but im still figuring it  out

Explanation:

Answer:

D

Explanation:

Answer:

venting volcanoes

Explanation:

Answer:

S-Phase

Explanation:

During the S-Phase, the cell replicates its DNA. Interphase is then followed by Mitosis. Mitosis is when the cell separates its two sets of DNA and divides it into two more cells.

Answer:

b. eukaryotic

Explanation: