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The number of atoms that remains at the said time is 3.76 * 10^11 atoms of Cl-36 and 2.62 * 10^12 atoms of Ar-36.

The term half life is used to explain the time taken for only half the number of radioactive atoms to remain.

Given that;

No = 3 * 10^12 atoms

t1/2 = 3.01 8 10^5 years

t = 9.03 * 10^5 years

Thus;

k = 0.693/3.01 * 10^5

=2.3 * 10^-6 year-1

Now;

N=Noe^-kt

N = 3 * 10^12e^(2.3 * 10^-6 * 9.03 * 10^5)

N = 3.76 * 10^11 atoms

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Answer:

all cells are surrounded by a cell membrane

Answer:

Jurassic Fact: The Morrison Formation is named after the town of Morrison, Colorado.

Explanation:

The Morrison Formation is a rock unit from the Late Jurassic (155 million years ago-148 million years ago). It extends throughout the Western United States and often contains fossils of dinosaurs such as Camarasaurus, Diplodocus, Apatosaurus, Stegosaurus, Allosaurus, and others. Although the Morrison was deposited in a wide variety of environments, it is the river channels that are most likely to contain dinosaur bones. Quiet water lake and pond deposits are best for preservation of the small delicate skeletons of salamanders, frogs, lizards, and others. In order for a fossil to form, the body must be buried quickly before weather conditions and scavengers have a chance to scatter or otherwise destroy the bone. In the park you will also see "Rainbow Beds" of the Morrison, which are mostly crumbly grey and maroon mudstones. They are pretty to look at, but do not often contain dinosaur fossils.

The high concentration of the Morrison formation means that more organisms have lived here 150 mya compared to the other parts of the country. The given statement is true.

The Morrison Formation is famous for its dinosaur fossils, which have been collected for more than a century ago on this planet. This has began with a find near the town of Morrison, Colorado, in 1877. Through radiometric dating it was found that the Morrison Formation has taken place between 148 to 155 million years old on the planet.

The Morrison Formation is a rock unit from the Late Jurassic period. It extends throughout the regions of Western United States and contains the fossils of dinosaurs such as Camarasaurus, Diplodocus, Apatosaurus, Stegosaurus, Allosaurus, and others.

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un organismo que deriva sus requerimientos nutricionales de sustancias orgánicas complejas.

The part of a DNA molecule responsible for the direct coding of specific traits in an organism is the nucleotide sequence.

The DNA molecule is the biological molecule that stores genetic information in living organisms.

The DNA molecule is made up of three major components in its structure:

The five carbon sugar is deoxyribose while the nucleotide bases are four in number as follows:

These nucleotides are responsible for the direct coding of specific traits in an organism.

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Answer:

use the generation tree starting by the grandparents as first generation and the parents as second generation until the child as third generation

Answer:

The answer is D

Explanation:

because there different type which creates variety

The main difference between the independent and dependent variables in an experiment is that the dependent variable is what the investigator controls, and the independent variable is what happens as a result of this. Thus, the correct option is C.

A variable is any factor, trait, or any condition which can exist in differing amounts or types in the experimental setup. There are different types of variables which include independent variables, dependent variables, categorical and continuous variables.

The dependent and independent variables are the most important variables in an experiment. The main difference between these two variables is that the dependent variable is what the investigator controls while the independent variable is what happens as a result of this.

Therefore, the correct option is C.

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There are many similarities between sharks and dolphins such as countershading and presence of dorsal fins, two pectoral fins and a tail.

Both sharks and dolphins have countershading in which their bellies are lighter than their backs. Dolphins and sharks both have dorsal fins on their backs, two pectoral fins, and a tail.

So we can conclude that similarities between sharks and dolphins are countershading and presence of dorsal fins, two pectoral fins and a tail.

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The similarities between sharks and dolphins are : Analogous

Analogous structures are similar structures present in different species that do not share the same/common ancestor.

The similarities between sharks and dolphins are streamlined bodies and the possession of fins and they are analogous structures because they evolved differently for sharks and dolphins as they do not share a common ancestor.

Hence we can conclude that  The similarities between sharks and dolphins are : Analogous

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Competition factor are the species of birds responding to in the environment. Thus, the correct option is B.

If numerous bird species eat on the same tree species, there will be fierce competition for food. As a result of the competition, each species will seek out a certain portion of the plant to feed on, most likely the part of the plant where it will be easiest to outcompete the competitors for food.

As a result, we may deduce that the right response is "They have evolved to diverse niches as a result of competition."

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Answer:

simply jus competition

Answer:

Platelets

Explanation:
________________________________________________________
Platelets are not a type of white blood cell because they only help treat wounds and slow down/stop you from bleeding.

they don't remove any germs. they only help treat your wound.
________________________________________________________

Hope this helped :)

This type of blood cell is not a type of white blood cell is C. Platelet.

Platelets are not a type of white blood cell. They are actually small, colorless cell fragments that are involved in the clotting process of blood. White blood cells, on the other hand, include various types such as lymphocytes, neutrophils, and macrophages, which play important roles in the immune response and defense against infections.

Platelets, also known as thrombocytes, are small cell fragments that circulate in the blood. They are formed in the bone marrow along with other blood cells. Platelets play a crucial role in hemostasis, which is the process of blood clotting to prevent excessive bleeding.

When there is an injury or damage to blood vessels, platelets are activated and aggregate at the site of injury. They form a plug to seal the damaged blood vessel and initiate the clotting cascade, which leads to the formation of a blood clot.

The correct answer is C. Platelet.

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Answer:

the flat horizontal lines indicate phase change

Explanation:

As the substance changes phase from solid to liquid and liquid to gas, the temperature remains contant due to latent heat energy.

Energy is being used to break the intermolecular bonds during phase change, therefore there is no change in temperature.

By weakening the immune system, HIV makes a person prone to other pathogens as well as cancer.

The term HIV stands for the human immune virus. It is a virus that attacks and weakens the immune system of a person thereby making the person very much vulnerable to pathogens.

Thus, by weakening the immune system, HIV makes a person prone to other pathogens as well as cancer.

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The diversity observed by henry is ecological diversity.

Ecological diversity is the variation in the ecosystems found in a region or the variation in ecosystems over the whole planet. Ecological diversity includes the variation in both terrestrial and aquatic ecosystems.

Henry observed the aquatic life in the pond, but also the trees, vegetation, and animal’s species on land called as ecological diversity across national park.

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Answer:

the process that would make them go as dark or light would be because they and blend in better to no the eaten it is called "latrell Selection" so in the Beach mice would stay light because they look like sand but if they were dark they would be easy to see that is why they are not there same thing for the forest but the other way around

if the forest changed to more sandy it would let lighter mice live there to but the dark mice would still live because it is not all sand i like it would be equal amount of dark and light mice because they would both have there spot to hide and just as vulnerable if the switched spots

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Answer:

Earthquakes take place miles underground, and can happen at any time in any weather. Big earthquakes always occur early in the morning.

Explanation:

Answer:

Answer:

yes it is doing

Explanation:

Renewable sources are those which can use again and again . We should use them to protect our natural resources

Classroom bioprinters can be used to print literally any biological object, whereas a chemical engineer is responsible to use chemistry to develop processes and devices.

A bioprinter is a device that combines cells and transcriptional growth factors, in order to generate structures similar to tissues and organs.

Moreover, a chemical engineer is aimed at exploring the chemical properties of matter to develop processes and devices.

In conclusion, classroom bioprinters can be used to print literally any biological object, whereas a chemical engineer is responsible to use chemistry to develop processes and devices.

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Answer:

There would be 8 after 3 rounds of mitosis

Explanation:

I looked it up :)

Answer:

General Adaptation syndrome

Answer:The needs of a plant and animal are similar in some aspects and very different in others. Both need to transport food molecules around the organism but plants, for instance, do not use the transport system to fight disease.

Explanation:

Only 10 calories did the bird actually absorb when there is a total of 1000 calories were stored in a plant chamber.

A calorie may be defined as a unit of energy that we get from food products and burn during a physical workout.

According to the 10% law given by Lindeman, if a plant chamber consists of 1000 cal., the amount of energy transferred to herbivores is 10% of 1000 which is 100 calories.

Similarly, the 10% of 100 cal., gets transferred to the next trophic level which is carnivores or secondary consumers. The 10% of 100 is 10 calories.

Therefore, only 10 calories did the bird actually absorb when there is a total of 1000 calories were stored in a plant chamber.

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Spicules is the skeletal structures which occur in most sponges. They provide structural support, as well as determent against predators. Large spicules, visible to the bare eye are called as megascleres, while smaller, microscopic ones are called as microscleres. Spicule cell - reproduction is the incorrect option.

amoeboid cell - digestion

Amoeboid cells are the that have capacity to change shape due to the parts of the skeleton of the cell called cytoskeleton and plasma-gel which changes the consistency of the cell's cytoplasm. Amoeboid cells use a pseudopodia, or false foot, to move forward. They carry-out phagocytosis, which is to eat or ingest other cells.

collar cell - water current

The collar cells serve two functions. Firstly, they beat their flagella back and forth to force water through the sponge. The water brings in nutrients and oxygen, while it carries out waste and carbon dioxide. Second, the sticky collars of the collar cells pick up tiny bits of food brought in with the water.

epidermal cell - covering.

The epidermis and its waxy cuticle provide a protective barrier against mechanical injury, water loss, and infection.

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Answer:

This is mostly because there were several non-bird dinosaurs that had wings. One of these was the Caudipteryx.

this should help

Answer:

living species evolved from reptiles, not mammals. However, they have adapted to fly. Aves are warm-blooded species with scales on their feet.

Answer:

Hi

Explanation:

It separates the content of cell from their external environment.

It controls the entry and exit of materials in nd out of cell

According to the research, someone who is quiet, reserved, and withdrawn will score low on the extroversion trait.

It is a personality trait that makes it easy for leaders to influence their subordinates.

This trait is characterized by sociability, high energy, and/or talkativeness, that is, they are very communicative and sociable.

Therefore, we can conclude that according to the research, someone who is quiet, reserved, and withdrawn will score low on the extroversion trait.

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Answer: B. combined with another molecule

Explanation:

i just took the test

Proteins are macromolecules composed of amino acid chains joined through peptide bonds. A denatured protein molecule has changed its shape. Thus, option c is correct.

Protein denaturation is a process where the proteins under unfavorable conditions like temperature, chemicals, and pressure result in an alteration in their functions.

The basic structural organization of the proteins contains primary, secondary, and tertiary formation that gets altered at high temperatures resulting in the breaking of the covalent bonds and disruption of the amino acid chain.

This results in the protein breaking and forming the primary structure that leads to alteration of the shape and conformation. This change results in loss of the function and activity of the protein.

Therefore, option c. the denatured proteins result in alteration in shape.

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Answer:

The xylem releases all its water

Explanation: