I’ll really appreciate it if you help me out with these 2 questions .

Answer:  A. Each step has two choices.

Explanation:

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A dichotomous key uses question pairs to identify organisms by their group is a true statement.

Thus, the true statement is a dichotomous key that uses question pairs to identify organisms by their group.

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Answer:

Natural selection and speciation: 'Ecological speciation'. ... Natural selection is generally recognized as a central mechanism of evolutionary change within species. Thus, natural selection plays a major role in generating the array of phenotypic and genetic diversity observed in nature.

Answer:

I really think it is c during photosynthesis energy is stored in oxygen..........

Answer:

a short term effect. In their life cycle analysis, the researchers found that a loaf of bread emits about a half-kilo of carbon dioxide. Forty-three percent of bread's greenhouse gas emissions can be attributed to the fertilizers used to grow wheat

It is a short term effect. In their life cycle analysis, it has been observed that a loaf of bread emits about a half-kilo of carbon dioxide.

The life cycle of a loaf o bread is started from growing, harvesting, and transporting to producing flour, shipping to a bakery, baking loaves and packaging them.

In the life cycle it has been found that per loaf of bread about a half-kilo of carbon dioxide is emitted where nearly 43%  of bread’s greenhouse gas emissions can be  used in the fertilizers for wheat cultivation.

Two-thirds of the emissions come from actual fertilizer production.

we are unaware of the environmental impacts of this products mainly concerned with human health or animal welfare.

It was found that  each loaf production is associated with  global warming as a result more amount of fertilizer applied in order to increase their wheat harvest.

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Answer:

is there a reon why u want to gain mucle

Explanation:

Answer:

B. Severe Weather.

Explanation:

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Answer:

Democracy is one of the universal core values and principles of the United Nations. Respect for human rights and fundamental freedoms and the principle of holding periodic and genuine elections by universal suffrage are essential elements of democracy.

Explanation:

Answer:

esophagus is the answer because it transfers the ingested food

Answer:consumers include herbivores, carnivores, and decomposers. If the plants or other producers of an ecosystem were removed, there would be no way for energy to enter the food web, and the ecological community would collapse.All living organisms hold a place in the food chain, structured around the transfer of life-sustaining energy through an ecosystem: from sunlight to plant to rabbit ...

Explanation:

Answer: Because Meiosis only occurs in reproductive cells, as the goal is to create haploid gametes that will be used in fertilization. Meiosis is important to, but not the same as, sexual reproduction. Meiosis is necessary for sexual reproduction to occ Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes. Meiosis also produces genetic variation by way of the process of recombination.ur, as it results in the formation of gametes (sperm and eggs). Hope this helps have a awesome day/night❤️✨

Explanation:

Answer: The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms

Explanation:

Answer:

The Answer Is A.

Explanation:

If They Can Be Used For Cleaning Up Mining Waste And For Sewage Treatment, That Makes Them A Good Thing. So It Wouldn't Be A Concern. Hope This Helps.

Genetically engineered bacteria cells can be used to clean up mining waste and for sewage treatment, which is not an ethical concern raised by genetic engineering. So, the correct option is A.

Genetic engineering may be defined as a process that involves the manipulation of the genetic material of organisms with help of lab-based technologies.

Bacterial species produced by genetic engineering used in cleaning up mining waste and sewage treatment benefit the atmosphere by reducing the level of waste and toxic compounds from suuroundings. So, it is not a matter of ethical concern.

Therefore, the correct option for this question is A.

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Answer:

éu mmhilão mo ei e

Explanation:

tô tanendomaissoc or roooo

Answer:

wx

Explanation:

wx

i thank we could use one

Explanation:because we don't really have cold weather in okc

hope it helps ☺

Answer:

Alfred Hershey and Martha Chase

Explanation:

In 1952 Alfred Hershey and Martha Chase were working with bacteriophages or phages, which are viruses that infect bacteria. They knew that a phage had an outer shell of protein and an inner core of DNA. In addition, from the electron microscope observations, they also knew that during infection the virus attacks the bacterium by its tails and introduces its genetic material into the bacterium to multiply using its metabolic machinery. They radioactively labeled two sets of phages: one with 32P (which marks only DNA) and another with 35S (which marks only proteins). In two parallel experiments, they infected bacteria with viruses marked on their DNA and with viruses marked on their proteins. The cultures were shaken with a mixer to separate the virus particles from the bacterial coatings. They then performed a centrifugation to separate the phages from the bacteria, so that the larger and heavier bacteria remain in the pellet, while the phages remain in the supernatant. They found that the radioactivity of 35S appeared in the supernatant while that of 32P appeared in the sediment, from which new radioactively labeled virus particles appeared, demonstrating that DNA was the genetic material.

movement of water molecules from a dilute solution to a concentrated solution

Explanation:

I put a process by which molecules of solventtend to pass through through a semi permeable membrane from a less concentrated into more concentrated one

example :feeling thirsty after having salty food

other then the lungs no all of the body parts get oxygen from blood cells

Answer:

kcmscmkndskckdnkcnkdnkenkdnksadnakncksnc

Explanation:

Answer:

Explanation:

Many nature groups are conserving areas and habitat where polar bears live and breed. Particularly at Arctic Regions. They also monitors the abundance of prey in a particular polar bear area to ensure its food source. Also governments are making laws and bills mitigating illegal trade of polar bear fur, meat and etc.

Answer:

c.Alleles

Explanation:

Genes are the hereditable units that transmit the information needed to specify traits (such as hair or eyes color), from parents to offspring, generation to generation. Genes are arranged in sequence in the chromosomes. A chromosome might contain hundreds of thousands of genes.

Each chromosome carries specific genes that code for specific proteins that have specific functions in the organisms. Each chromosome carries information to synthesize different proteins needed to accomplish a certain function. But not all chromosomes carry the same gene sequences. Only homologous chromosomes carry information for the same trait, but even this information is not necessarily the same. They might have the same gene but in different alternatives.

Alleles are the different alternatives in which a gene might appear.  By the process of natural mutation, a gene might change into two or more alternative forms that are called alleles. These alternative forms codify for the same trait expressing different phenotypes.

In the exposed example, alleles are responsible for the different phenotypes expressed by the girls. The alternative forms of the genes -the alleles- that codify or hair color and for eyes color, express either red or blonde hair, and either blue or brown eyes.

The final genotype and phenotype depend on the gametes that merge to form the zygote, and hence the new organism.

Answer:

Prophase I, prometaphase, metaphase I, anaphase I, telophase I, and cytokinesis, interphase, prophase II, prometaphase II, metaphase II, anaphase II, telophase II, and cytokinesis.

Explanation:

Prophase I, prometaphase, metaphase I, anaphase I, telophase I, and cytokinesis, interphase, prophase II, prometaphase II, metaphase II, anaphase II, telophase II, and cytokinesis are the 12 phases of cell division that occurs in the sex cells of human body. These double phases allow the sex cells to produce four daughter cells from a single parent cell but the chromosomes number is half in each daughter cell.

Answer:

B.

Explanation:

foods that are high in protein have the ability to give you more endurance and energy

Answer:

1 Zinc, 2, Hydrogen, 2 Chlorine

Explanation:

Zinc, 2, Hydrogen, 2 Chlorine is a chemical reaction.

Chemical reaction, the transformation of one or more chemicals (the reactants) into one or more distinct compounds (the products). Chemical elements or chemical compounds make up substances.

Chemical reactions are a fundamental component of life itself, as well as technology and culture. Burning fuels, smelting iron, creating glass and pottery, brewing beer, making wine, and making cheese are just a few examples of ancient processes that involved chemical reactions.

The Earth's geology, the atmosphere, the oceans, and a wide variety of intricate processes that take place in all living systems are rife with chemical reactions.

Therefore, Zinc, 2, Hydrogen, 2 Chlorine is a chemical reaction.

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Answer:

44 N

Explanation:

Force applied can be calculated using the formula as follows;

F = m.a

Where;

F = force (Newton)

m = mass (kg)

a = acceleration (m/s²)

According to the information provided in this question, mass of shot put = 5.5kg, acceleration = 8m/s². Hence;

F = m × a

F = 5.5 × 8

F = 44 Newtons

The force needed by the shot putter is 44N.

Answer:

It is responsible for protein synthesis, cell division, growth and differentiation.

Answer:

The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.