Fossils in _______ layers of rock are generally estimated to be _______ than fossils found in the upper layers.

The stimulus that causes a responding plant to demonstrate phototropism is the direction of light. Thus, the correct option is A.

Phototropism may be defined as the process that involves the growth of plants with respect to light. It is usually associated with the direction of light.

Phototropism is one of the major functions of the phytohormone known as Auxin. Apart from phototropism, auxin also involves gravitropism and thigmotropism.

According to the principle of phototropism, the plant usually grows in the direction of light, or from where the light is directly falling on the leaves of the plant.

Phototropism is of two types positive which induces the growth of the plant  towards the direction of light and negative phototropism which provokes the growth away from the direction of light

Therefore, the stimulus that causes a responding plant to demonstrate phototropism is the direction of light. Thus, the correct option is A.

To learn more about Phototropism, refer to the link:

https://brainly.com/question/12461019

#SPJ6

When evaluating blocks, density does not necessarily correlate with size, as it depends on both mass and volume; larger blocks aren't always more dense. This challenges initial assumptions and leads to further investigation about material properties and the identification of materials based on density.

When examining the size of blocks and their density, you may notice that the density does not necessarily correlate with the size of the block. Density is a measure of how much mass is contained within a unit volume, and it can vary regardless of the block's size. For instance, two blocks with the same volume can have different masses, leading to different densities. This might not match your initial thoughts if you assumed that larger blocks would be more dense.

Materials often have characteristic densities, which allows us to identify them and predict where they might be found, such as in the city or the country. In a classroom setting, we use these observations to test hypotheses about material properties. When you compare your results to your original hypothesis, you might find discrepancies, leading to further inquiry about why certain materials behave as they do, such as differing rates of sinking or floating (e.g., how fast a block goes when placed in water).

The concept of density is also crucial when ordering blocks by mass or by density, considering the relation between mass and density. In a scientific exercise or an educational simulation, you might be asked to determine the mass, volume, and density of different blocks, and then rank them accordingly. Doing so leads to a deeper understanding of the physical properties of materials.

The density of the green block, for example, can be determined by removing all other blocks from a tank of water and measuring how much water the green block displaces when it is placed in the middle of the tank.

B. Neck elongation of women using weighted rings and tribal Africa

I had this on a test. I remember this being the correct answer.

The geologic time scale helps scientists track events in Earth's history by organizing important changes into divisions based on geology, climate, and the evolution of life.

This scale divides Earth's history into divisions based on major changes in geology, climate, and the evolution of life. By studying rocks and fossils, researchers can piece together Earth's past and understand the sequence of events.

Answer:

coal and petroleum I think.

Explanation:

I am not sure so take my answer with a grain of salt.

Thank you!

Answer:

B and D

Explanation:

Answer:

the answer is C : two haploid cells are formed.

Explanation: think of it like this: Meiosis I is More haploid cells

hope this helps ;)

After the first round of cytokinesis in Meiosis, meiosis II begins and proceeds to form four genetically unique haploid cells due to the separation of sister chromatids and chromosomal crossover.

After cytokinesis is completed at the end of meiosis I, the resultant cells go through meiosis II.

During meiosis II, the sister chromatids within the two cells produced in the first round of meiosis separate, creating four unique haploid cells.

These cells are genetically unique due to the random assortment of paternal and maternal homologs and the recombination of maternal and paternal segments of chromosomes during crossover.

The process of chromosome separation that occurs in meiosis II is similar to what happens in mitosis, but with half the number of chromosomes.

Learn more about Meiosis here:

https://brainly.com/question/32192580

#SPJ6

A hesitation beat is a cardiac event where there is a pause following a premature contraction, resulting in what may feel like a skipped heartbeat, and can suggest underlying heart issues if persistent.

A hesitation beat is a term used in cardiac physiology to describe a delay or pause in the heartbeat that is often secondary to a premature contraction. In the case of a premature atrial contraction (PAC) or premature ventricular contraction (PVC), the subsequent heartbeat is delayed as the heart's electrical system resets itself. This results in a feeling of a skipped or extra beat and can sometimes be felt by the patient as a palpitation. While hesitation beats can be a normal variant in many individuals, they can also indicate underlying cardiac problems, especially if they occur frequently or are associated with other symptoms. It is important for individuals who experience recurrent hesitation beats to seek a medical evaluation to rule out potential issues.

Answer:d.insertion

Explanation:

The statement which is true about air quality is: D. The EPA measures air pollution levels daily.

Air can be defined as an invisible mixture of gases that are having nearly constant concentrations and which surrounds the Earth.

The gases which makes up the air that surrounds the Earth include the following:

Hence, oxygen is one of the constituent gas of air that all living organisms such as humans and animals breathe in during respiration.

In this context, it is very important and essential that air is free from any form of impurities or pollutants, so as to avoid lung-related diseases.

In the United States of America, the Environmental Protection Agency (EPA) is a governmental agency that is saddled with the responsibility of ensuring air quality.

Therefore, the Environmental Protection Agency (EPA) measures the level of air pollution on a daily basis.

Read more: https://brainly.com/question/11068732

Answer:

Evolution is a natural phenomenon by which inheritable characteristics of a species change over generations.  

It mainly relies on processes such as natural selection, genetic drift, migration, and mutation.

Heredity, genetic variation, and differential reproduction result in evolution with the help of natural selection.

Isolation (geographical or reproductive) prevent the flow of genetic material between the populations. With time, the populations evolved in different species as a result of adaptation towards different habitat or niche (natural selection).

For example, in Galapagos islands finches were isolated through different islands. The flow of genetic material was restricted. In addition, natural selection helped different populations to adapt different characters as an adaptation towards different food resources.

As a result, different populations evolved into different species with varied body size, beak shape, and feeding behavior.

amino acids and proteins

Answer:

Cellular differentiation and signaling

Explanation:

Cells specialize in their functions due to the process of differentiation, transforming embryonic cells into new cells with specific morphology and physiology.

The behavior of cells for different functions is due to gene expressions and also thanks to receptors on the surface and inside the cell.

These receptors bind to signaling molecules, establishing communication between the nervous system and the others, ensuring the specificity of cells.

In a snapdragon, if a red flower is crossed with a white flower, it will result in a pink flower due to the law of incomplete dominance.

In the law of incomplete dominance, both alleles of a gene are partially expressed in a locus resulting in the expression of a phenotype that is completely different from any of the parents.

It is also known as the law of partial dominance. This occurs because neither of the two alleles is completely dominant over one another and thus neither of them is fully expressed.

In this case, the genotype of one parent is RR (red flower) and the genotype of the other parent is ww (white flower).

So, according to the punnet square,

    R       R

w  Rw      Rw

w  Rw      Rw

Rw genotype represents the phenotype of the pink flower.

Now, if a pink flower is crossed with a red flower,

      R     R

R   RR  RR

w  Rw  Rw

RR genotype represents red flowers and Rw genotype represents pink flowers.

Therefore, it would result in half of the flowers being red and half of the flowers being white.

Read more incomplete dominance, here

https://brainly.com/question/14053639

#SPJ2

Answer:

This is false: 3.Cells are composed primarily of inorganic molecules

Explanation:

Water, inorganic compounds and organic molecules form approximately 75-85% of the weight of living matter. Of all, water is the most abundant, about 70%, while inorganic compounds only represent approximately 1% of the cell composition. The rest is composed of macromolecules such as proteins, polysaccharides, lipids and nucleic acids. Cells have four types of organic molecules: sugars, fatty acids, nucleotides and amino acids.

Answer:

36 is 3  and 37 is 4

Explanation:

IM IN THE SAME CLASS AS YOU

To change ATP to ADP, a phosphate group is removed, a process that releases energy as the high-energy phosphoanhydride bond between the second and third phosphate groups is broken.

When an ATP molecule is changed to ADP (adenosine diphosphate), a phosphate group is removed. This process is known as dephosphorylation or hydrolysis. The bond between the second and third phosphate groups in ATP (the phosphoanhydride bond) is broken, releasing useful energy for the cell. The energy is stored in this bond because phosphate groups, which are negatively charged, repel each other and create instability in the ATP molecule. Thus, when ATP loses one phosphate and becomes ADP, energy is released as the high-energy bond is broken.

Figure 10.11 illustrates how ATP is hydrolyzed into ADP and inorganic phosphate, with the release of energy that can be used to do work in the cell. Overall, ATP functions as the energy currency of cells, with the conversion between ATP and ADP being central to energy storage and usage in biological systems.

The answer is... CO2 (carbon dioxide) and H2O (water), which then become the reactants for photosynthesis. (C)

Answer: The products X and Y are CO₂ (carbon dioxide) and H₂O ( water), which then become reactants for photosynthesis.

The given reaction in the question depicts cellular respiration. In this process, oxidation of glucose takes place in order to generate energy in the form of ATP ( adenosine triphosphate) that is utilized by the cell for various activities.

CO₂ and H₂O are released in this process. They are utilized as reactants by green plants and algae for synthesis of food ( photosynthesis).

Critics dismissing evolution as 'just a theory' fail to recognize the extensive evidence supporting the theory and its rigorous testing.

In science, a theory is a body of thoroughly tested and verified explanations for a set of observations. The theory of evolution has substantial evidence supporting it, and it has been rigorously tested over time. Critics who dismiss evolution as 'just a theory' misunderstand the scientific definition of theory and the extensive evidence backing the concept.

answer is B. A boy brought a pair home as pets.

correct me if i'm wrong.

On the basis of the pH scale, strong bases are mostly contained at the end (13-14) and strong acids have been found at the starting (0–1).

It is a kind of scale which would be used to measure the strength of acidity as well as basicity. pH scale ranges in value between 1 to 14. On the metric scale, a 7 indicates that the outcome appears neutral.

"An acid  would be considered as the substance that ionizes completely whenever dissolved in a particular solution. "It  will release a higher concentration of H+ ions. For example, hydrochloric acid.

A substance that ionizes completely in solution to give OH- ions will be referred as strong base. For example, sodium hydroxide.

To learn more about strong acid, pH, and strong base, here

https://brainly.com/question/12811944

#SPJ2