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Gnoma [55]
3 years ago
5

Which is an example of a negative feedback? The accumulation of blood platelets, which cause blood clotting, is triggered by a t

ear in the lining of the blood vessel. The production of red blood cells, which transport oxygen, is triggered by a low level of oxygen in the blood. During childbirth, the secretion of hormone oxytocin, which intensifies the contractions, is triggered by uterine contractions. NextReset
Biology
1 answer:
zlopas [31]3 years ago
4 0
<span>The production of red blood cells, which transport oxygen, is triggered by a low level of oxygen in the blood.  is correct.</span>
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how energy is recycled in an ecosystem. how our atmosphere maintains its temperature. the importance of decomposers in an ecosys
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Answer:

The flow of energy in ecosystems is unidirectional or one-way.

Explanation:

Energy is the ability to do work. Energy flows in one direction in an ecosystem and is not recycled. This is because during the transfer of energy from one level to another, energy is lost. Most of the energy received from the sun by producers, plants, is lost as heat to the surroundings. The rest energy is converted by plants to produce food in the form of chemical energy.

Primary consumers feed on plants and secondary consumers feed on the primary consumers and so on up to quaternary consumers. However, at each level of energy transfer, some energy is lost as heat during respiration, some as unused or undigested materials, while some others are used for each organisms metabolic activities. About 90% of energy in a trophic is used at that trophic level. Therefore, only about 10% as much energy is available to  organisms at each successive trophic level. Therefore, energy is not recycled in ecosystems.

Earth's atmosphere maintains its temperature by means of the earth's energy balance. This refers to how incoming from the sun and outgoing energy from the earth are in balance, thereby keeping earth's temperature constant.

Decomposers, are organisms such as bacteria, fungi, and small animals such as ants and worms that eat and decompose dead and waste organic matter and which recycle nutrients back into food chains making them available for plants use. Therefore, decomposers are an essential components of all ecosystems.

3 0
3 years ago
What is the bottle neck effect? ​
inessss [21]

Answer:

The bottleneck effect, also known as a population bottleneck, is when a species goes through a "bottleneck" event that suddenly significantly reduces its population. ... The bottleneck effect is a type of genetic drift, which is defined as a random change in allele frequencies.

7 0
3 years ago
Eating regular meals will: cause you to gain weight help you to establish healthy eating habits and keep you energized throughou
PolarNik [594]
Eating regular meals establishes healthy eating habits, keeps you energized throughout the day, and can cause you to lose weight. regular eating habits establish healthy eating habits because it's always good to eat regularly. One of the biggest misconceptions to losing weight fast and in a healthy manner is by not eating, that is false. If you eat regular meals you can lose weight perfectly fine. The more calories you eat the more you lose, now i'm not saying eat a million and one candy bars, i'm saying if you eat food that is healthy can get you to lose weight. That also doesn't mean live off of carrots and strawberries for a week! You have to eat normally. So a peanut butter and jelly sandwich, pasta, rice or any kind of meat is the way to lose weight vs eating low calorie anything or a candy bar. Every type of food gives you energy! It all depends what it is too predict how much energy you'll receive or how long it will last. For instance, a candy bar will give you a lot of energy, fast but won't last as long as eating pasta or rice for energy. Eating regular meals does cause you to gain weight but thats a good thing, it gives you energy, muscle and can help you lose weight. Eating regular  meals actually does the opposite of causing you to be hungry more often, it keeps you fuller for longer. 
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3 years ago
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Your grandmother is in the hospital and is put on a liquid diet. after examining her chart, a mistake is found stating that her
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1102.31131 Pounds, this seems highly unrealistic for a Grandma, are you sure this is the question?
3 0
3 years ago
In the 1950s, the structure of DNA was discovered by using models and x-ray chromatography. Currently, science has used advanced
liberstina [14]
<h3><u>Answer;</u></h3>

Gene therapy to correct defective genes that cause diseases.

<h3><u>Explanation</u>;</h3>
  • Gene therapy refers to the procedure that involves the introduction of nucleic acids (DNA or RNA) into the cells of an organism for the purpose of correcting abnormalities, such as a mutations or in other words to treat a genetic disease.
  • Gene therapy entails bringing a normal and functional gene known as a trans-gene into a cell with altered gene. Another method can bring RNA capable of partially regulating or blocking the expression of an altered gene.
  • The nucleic acids are introduced into the patient's cells by means of a viral vector or injected directly into the cells in the form of naked DNA.
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3 years ago
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