please help! i’m confused

Answer:

feathers are dead tissues. They are only alive while developing as they have a blood supply. Feathers are produced by living cells located in small pit-like follicles in a bird's epidermis, its outer skin layer. The feather is enlarged by the keratin that is protruding straight out from the skin follicle. In order for something to be classified as anything that was never alive

Explanation:

Thunderstorm cloud have low temperature at the top of the them, ice is formed in the thunderstorm. Thunderstorm clouds are the rain-bearing clouds. Thus, the correct option is C.

Thunderstorm clouds are the rain-bearing clouds that also produces lightning. Thunderstorms are dangerous. Every type of thunderstorm produces lightning.

The thunderstorm clouds are menacing looking multi-level clouds, with heights extending up to the sky in towers or plumes. More commonly known as thunderclouds. It is the only cloud type that produces hail, thunder and lightning.

There are three basic ingredients required for the development of thunderstorm, which are moisture, an unstable atmosphere, and some way to start the atmosphere moving. However, the moisture is necessary component to produce the thunderstorm clouds and precipitation.

Therefore, the correct option is C.

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Answer:

It binds to a protein called hemoglobin in red blood cells.

Explanation:

I took the quiz.

Oxygen gas is carried in the body from the lungs to the tissues by binding to a protein called as hemoglobin in red blood cells. Thus, the correct option is A.

Hemoglobin is abbreviated as Hb or Hgb. It is the iron-containing oxygen-transport metalloprotein which is present in the red blood cells of almost all the vertebrates as well as the tissues of some of the invertebrates.

Hemoglobin is the main protein in the red blood cells which carries oxygen gas to body's organs and tissues and it transports carbon dioxide gas from the different body organs and tissues back to the lungs.

Therefore, the correct option is A.

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When unnatural pollutants are exposed to sunlight and heated up, they create ozone. The correct option is a.

It is the resulting pollution from human activity. It covers the use of fossil fuels in manufacturing, transportation, and thermoelectric power plants, as well as industrial gas emissions, mining, processing, and stone crushing.

The physical degradation or contamination of the environment caused by the release of hazardous, dangerous, or toxic chemical substances is known as pollution.

Oxides of nitrogen (NOX) and volatile organic compounds (VOC), commonly referred to as hydrocarbons, undergo chemical interactions that result in ozone. Both close to the earth and high in the atmosphere, this reaction is possible.

Therefore, the correct option is a. ozone.

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Answer:

I think its B but im not 100% sure

Explanation:

Answer:

Metaphase

Explanation:

The answer is metaphase.

Answer:

A. Sectioning

Explanation:

I hope it helps

Answer:

(2) made smaller in size

Explanation:

Mechanical digestion involves physically breaking the food into smaller pieces.

Answer:

2

Explanation:

2 because it makes sense and we chew food to make it smaller to digest it easily

Answer:

I think it's A but im not sure?

Answer:

D. Solvent, Solute, Solution

Explanation:

When you make chocolate milk, milk is the solvent, and the chocolate powder is the solute the mixture in now called a solution.

Explanation:

As such, plants look green because they absorb red light most efficiently and the green light is reflected.

Answer:

Explanation:

Undergraduate courses in genetic engineering are limited; undergraduate students wishing to study genetic engineering often enroll in biological science, genetic biology or chemistry degree programs, which may include relevant elective course options.

Answer:

The “recommended temperature limit” indicates limit of the temperature that is good for our world.

Explanation:

The temperature related to the “recommended temperature limit” means that in the graph there is a limit of temperature for our world's environment. if the temperature is between this limit, there is less or no adverse effect on our environment while on the hand, if the temperature exceeds from this limit, then it adversely affected our world because the concentration of carbondioxide gas in the atmosphere increases due to this increase temperature..

Answer:

They can occur twice a month, during a new or full moon.

Explanation:

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Tiger frogs have similarities in their mitochondrial DNA that are not shared by other frog species

Answer:

I believe the answer is D.

Explanation:

Hope this helps! ^^

Answer:

Photosynthesis

Explanation:

Photosynthesis is the process by which green plants use sunlight to produce their food

Answer:

There are 2 sex chromosomes – X and Y. Females have 22 autosomes and two X chromosomes, i.e., 22 + XX, while males have 22 autosomes and an X and Y chromosome each, i.e., 22 + XY. hope it helps.

basically 22

Explanation:

Answer:

one

Explanation:

females have two and males have one

Explanation:

in order for a gene to even be transcribed, it must be "turned on" or "expressed" meaning the nucleotides have moved away from each other. after it's expressed, the gene will unwrap and continue on with transcription, and make mRNA copy of a DNA strand. once RNA is made it will leave nucleus and enter cytoplasm to find a ribosome. once it attaches to ribosome, translation begins, and a tRNA will bind to anti-codon, and the building of a polypeptide/protein will begin.

Answer:

What does the fox say?!?!?!?!?!?!?

Explanation:

NI NI NI NI NIN IN IN IN IN INININININININININNINI

Answer:

that last one

Explanation:

Answer:

Plants or other photosynthetic organisms (autotrophs) are found on the first trophic level, at the bottom of the pyramid. The next level will be the herbivores, and then the carnivores that eat the herbivores. The energy pyramid (Figure below) shows four levels of a food chain, from producers to carnivores.

Explanation:

I hope I hope

Looking at most newborn twins squirm contentedly in their cribs, you'd never guess that some were recently in peril. That's because carrying multiples raises the risks that a woman can suffer complications before she actually delivers.

Many twins are miscarried early in the pregnancy, often before a woman even knows she's pregnant. As reported in the International Journal of Fertility, only about one in eight embryos that starts as a twin is born as a twin. If they do survive, twins are usually born healthy. However, they are still more likely than other babies to have birth defects or to be born prematurely or underweight.

Carrying twins can be hard on you, too. You'll be more likely to develop pregnancy-related high blood pressure or diabetes. And there's a greater likelihood you will have a cesarean section when you deliver.

If you're carrying twins, some simple lifestyle changes and good prenatal care may help you reduce the likelihood of the following complications.

Low birth weight

Because they have to share nutrients and living space, newborn twins tend to be smaller than single babies. Even full-term twins often weigh less than 5-1/2 pounds each, making them vulnerable to a variety of health problems. You can help your babies reach a healthy size by making sure you put on enough weight during pregnancy. Try to eat 300 calories more each day than you would if you had a single baby (about 2,700 calories in total). If you had a healthy weight before pregnancy, you should aim to put on about 35 or 45 pounds.

Unequal size

Twins don't always share equally. In roughly 30 percent all twin births, one baby will be larger than the other. Some studies suggest that if one of your babies is at least 25 percent heavier than the other, one or both of them may be more likely to have breathing problems or need intensive care. Your doctor will track the growth of both your babies throughout your pregnancy. The first signs of unequal growth usually appear in the third trimester.

Twin transfusion syndrome

Twin transfusion syndrome poses a dangerous threat to identical twins who share a single placenta. It's normal for such twins to exchange blood during a pregnancy. But in about 20 percent of cases, one twin starts pumping large amounts of blood to the other twin, putting both of them at risk. In severe cases, the twin receiving the extra blood may develop heart failure while the other twin becomes dangerously anemic. Early diagnosis and treatment can slow the abnormal blood flow and lower the risk of complications.

Birth defects

Birth defects are common in twins, especially identical twins. Taking folic acid before and during pregnancy can help prevent neural tube defects. As reported in the medical journal The Lancet, however, about 10 percent of all identical twins are born with a birth defect such as a heart problem, a shortened limb, a club foot, or a dislocated hip (the conditions listed are linked to having less space in the uterus and would not be affected by folic acid.) Most of these conditions are treatable, however.

Risks to the mother

Your doctor will check you regularly throughout the pregnancy for signs of high blood pressure or diabetes. When detected early, both of these conditions can be controlled before they have a chance to threaten your pregnancy.

Special care

Carrying twins means you'll probably get extra attention from your doctor throughout your pregnancy. The doctor may suggest cutting back on activities between the 20th and 30th week of pregnancy, even if you haven't had any signs of labor. Many physicians also recommend an extra monitoring check on the babies' heart rate and movement, such as an ultrasound or nonstress test. A biophysical profile, which checks on heart rate, movement, and the amount of amniotic fluid in your body, might also be indicated. If you do go into labor prematurely, your doctor may suggest drugs to stop the labor or use corticosteroids to speed up the development of the babies' lungs.

It's possible that you may be able to deliver twins vaginally. But if the labor is difficult, the birth canal is too narrow, or one or both of the infants is in the breech position, you may have to undergo a c-section, in which the babies are delivered through an incision in your uterus. Talk to your doctor about what you can do to prepare for delivery.

Twins are a special challenge, both before birth and after. For now, your job is to stay healthy and get top-quality prenatal care. Two important people are counting on you.

Does this help lol :D

Answer:

Skin cancer can be genetic but just because twins are twins doesn't mean the both must have cancer if it isn't genetic and one twin got it it docent assure you for both getting it if that makes sense example one twin scrapes their knee doesn't mean the other one will have a scraped knee too .

Explanation:

Answer:

eukaryotic

Explanation:

I think it is eokaryotic...sry if im wrong

Answer:

eukaryotic

Explanation: