Philippe bouchet and colleagues conducted a massive survey of marine mollusks on the west coast of new caledonia. twenty percent of the species found had only a single specimen collected. what does that suggest about the diversity of mollusks in this area?

Answers

Answer 1
The suggestion about the diversity of molluscs in the area is how many species from the twenty percent are probably rare. Biologists use different approaches to describe the levels of biological diversity in the marine environment.
One approach is quantitative ecologists and the other one is biogeographers who pool data on species.
Molluscs are phyla which are routinely considered in marine biodiversity surveys

Related Questions

Which structure supports and connects the cells of the nervous system?

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Neuroglia, which is sometimes referred to as "glia", are cells that are not neurons but merely support and provide protection for neurons. They are called 'non-neuronal cells' and they exist in the central nervous system (brain and spinal cord) and the peripheral nervous system (nerves outside the brain and the spinal chord).

What is one phenotypic trait that is the same in Mom, sad, and Baby dragon?

Answers

If they have wings it could be that they all have wings. Or if they all have the same eye color it could be that. But that depends on their alleles.

The oldest technique for stretching, which is seldom used because it can cause muscle soreness, is called _______ stretching.

Answers

Ballistic stretching is your answer. Have a great day.

Cartilage, found in the ears and nose, is a rubbery type of _____ tissue. studysoup.com

Answers

It is a rubbery type of connected tissue.

Answer: The correct answer is Connective

A wedge-capped capuchin is a species of South American monkeys. They live in groups that typically have one male and several females. Sometimes young males live in a group too in order to help take care of the young. Most groups have a dominant female that often displays aggression toward other females and young males in the group. Which best describes the group behavior of these monkeys? territorial imperative social hierarchy migratory hibernating

Answers

social hierarchy as there are dominant monkeys over a group

Answer:

The correct answer would be the social hierarchy.

Explanation:

A basic aspect of social organization that is decided by display behavior or fighting and leads to a ranking system or order of place of the animals in a group is known as social hierarchy.

Dominance type of social hierarchies often decided best or early access to mating, social interactions, or food within animal groups.

Wedge-capped capuchin monkeys show this type of social hierarchy in their pack or group where dominant females display aggression towards other young males and females.

Thus, the correct answer is the social hierarchy.

Crude oil is a toxic chemical that is ____

A. Organic
B. A pathogen
C. A heavy metal
D. Inorganic

Answers

Correct Answer is D.) Inorganic. (Gradpoint)

Answer:

A. Organic  is the correct answer.

Explanation:

Crude oil is a toxic chemical that is Organic.Crude oil is an organic chemical composed of hydrogen, carbon and it also contains some amount of sulfur, oxygen, and nitrogen.crude oil found inside the Earth.When petroleum originates directly from the ground as the liquid is called crude oil.crude oil is natural resources that cannot be renewed because it is nonrenewable resources.crude oil is a very toxic mix of carcinogens, mutagens, neurotoxins, neurotoxins, and respiratory irritants.

A large plant population may impose selective pressure on a smaller, isolated group of plants, resulting in a change in allele distribution. which mechanism is responsible for this change in the allele distribution? mutation hybridization trait acquisition genetic drift

Answers

The answer is genetic drift. This is the change of allelic frequency in a population due to natural selection in favor of particular traits. The effect of natural drift is greater is a population of small size that in a big population. When the allelic frequency of the isolated group of plants reaches 0, it is deemed as lost.

The youth movement originated with the ___ the generation born after ___

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I believe that the youth movement originated with the baby boomers, the huge generation born after the world war II. By 1970, 58.2 % of the population in America was under the age of 35 years. The economic boom of the 1950s meant more families could afford to send their children to College. College life gave the young people a sense of freedom and independence. It was on college campuses across the nation that youth protest movements began and reached their peak. 

The passage of water through a selectively permeable membrane from a less concentraded region to a more concentrated region is called

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I believe the answer for the above question is Osmosis. It is the net movement of water molecules through a selectively permeable membrane, from a region of greater water concentration to a region of lesser water concentration. It is the diffusion of water through a selectively permeable membrane. It occurs when two solutions of different solute concentration are separated by a selectively permeable membrane. 

Fluorine has an atomic number of 9. Then n=1 energy level has two elections, and the n=2 energy level has seven electrons. Fluorine’s valence is ___.

A) +2
B) -2
C) +1
D) -1

Answers

Flurione's valence is -1, so the answer is D

The oral cavity is separated from the nasal cavity by the hard and soft __________.

Answers

The oral cavity is separated from the nasal cavity by the hard and soft palate.
Final answer:

The oral cavity is separated from the nasal cavity by the hard and soft palate. The hard palate is the bony part of the roof of the mouth, while the soft palate is the flexible part towards the back.

Explanation:

The oral cavity and the nasal cavity are anatomically separate structures, and they are separated by the hard and soft palate. These form the roof of the mouth and the floor of the nasal cavity. The hard palate is the anterior, bony part of the roof and it separates the mouth from the nasal passages, while the soft palate is the fleshy, flexible part towards the back of the roof of the mouth, continuing the separation between the oral and nasal cavities.

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A specimen collection helps a scientist do an experiment by

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Specimen collection is the process of obtaining tissue or fluids for laboratory analysis or near-patient testing.

A specimen collection helps a scientist do an experiment by assembling a large number of samples for comparison. A poorly collected specimen may lead to failure in isolating the causative organism(s) and/or result in the recovery of contaminating organisms.


Answer:

A specimen collection helps a scientist do an experiment by: Providing access to objects that are hard to find.


a. True
b. False: skinfold measurements can be used to estimate body fat percentage based on the assumption that the amount of subcutaneous fat is proportional to the total amount of body fat.

Answers

The answer to the question you asked 
 is true
Final answer:

Skinfold measurements can accurately estimate a person's body fat percentage by assuming the amount of subcutaneous fat (under the skin) is proportional to the total body fat. Calipers measure skinfold thickness at several body locations, and these measurements are used in equations to estimate body fat.

Explanation:

The statement is indeed true. Skinfold measurements are widely used to estimate a person's body fat percentage. This technique assumes that the amount of fat stored subcutaneously, or directly under the skin, reflects the total amount of body fat. These measurements aid in the calculation of body fat composition, which is crucial in determining individual health status or fitness level. Special calipers are used to measure the thickness of the skinfolds at specific sites on the body. These values are then inputted into an equation to estimate body fat percentage.

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Carbohydrate loading maximizes the storage in skeletal muscles of what compound?

Answers

Carbohydrate loading maximizes the storage of glycogen in the skeletal muscles. Carbohydrates are the main fuel source of the body and help the overall muscle activities. Carb-loading is used by endurance athletes such as runners, for the purpose of maximizing the storage of glycogen in the skeletal muscles and the liver. However, carbohydrate may cause some discomfort or side effects, such as weight gain, digestive discomfort and also blood sugar changes.

Is a significant environmental phenomenon that impacts weather patterns thus food production. farmers across the continent plan their planting and harvesting and pastoralists move their cattle and herds according to its rainmaking mechanism. unpredictable weather patterns and growing populations can lead to desertification and this can lead to droughts which can cause mass starvation among populations?

Answers

Watch the backyardigans and learn team work.

Which two factors are mostly responsible for recent rapid globalization?

Answers

Advances in transportation and communication, alongside reduced trade barriers, have been key factors contributing to rapid globalization.

Advances in transportation and communication have significantly reduced the costs of moving goods globally, particularly with the development of shipping containerization in 1956. This innovation lowered transportation costs by up to 90% and facilitated the movement of goods worldwide. Secondly, the reduction of trade barriers between countries has played a crucial role in the rapid globalization process, making it easier for goods and services to flow across borders.

In the myplate icon, which category is shown as a separate food group?​

Answers

In the Myplate icon, the nutrient that is shown as a separate food group is the dairy. Myplate is the recent  guide to nutrition that was  published by the USDA center for nutrition Policy and Promotion, a pie chart that depicts a place setting with a glass and a plate that is divided into five groups of food. 

If you ate a samples of the different carbohydrates seen here, how would the available energy differ from each source and why? A) The simple sugars would have less energy than the complex sugars, because the molecules are smaller. B) The simple sugars would have more available energy, because they are small molecules and are easy to break down. C) The complex carbohydrates would produce the most energy, because they have a high C:H ration and relatively little oxygen. D) All of the carbohydrates would produce about the same amount of energy, as they all have a large amount of oxygen atoms.

Answers

The correct answer is D



A) The simple sugars would have less energy than the complex sugars, because the molecules are smaller.

B) The simple sugars would have more available energy, because they are small molecules and are easy to break down.

C) The complex carbohydrates would produce the most energy, because they have a high C:H ration and relatively little oxygen.

D) All of the carbohydrates would produce about the same amount of energy, as they all have a large amount of oxygen atoms.

Final answer:

Simple sugars, being small molecules, are quickly broken down and absorbed by the body, leading to a rapid but short-lived burst of energy. Complex carbohydrates, with their longer chains of sugar molecules, provide a more sustained energy release. The energy difference arises from the rate at which these carbohydrates are metabolized.

Explanation:

When considering the energy available from different types of carbohydrates, it's important to understand that carbohydrates serve as a significant source of energy for the body. The body breaks down these carbohydrates into glucose, which is then used in cellular respiration to fuel various activities. Carbohydrates come in two main forms: simple sugars (monosaccharides like glucose and fructose) and complex carbohydrates (polysaccharides like starch and glycogen). The process of sugar catabolism breaks down complex carbohydrates into their simpler forms, making them available for ATP production in cells.

Complex carbohydrates are longer chains of sugar molecules and thus take longer to break down, which implies a more sustained release of energy compared to simple sugars. Simple sugars, being smaller molecules, can be quickly broken down and absorbed, leading to a rapid but short-lived burst of energy. Therefore, the correct answer would be (B) The simple sugars would have more available energy, because they are small molecules and are easy to break down.

When Carter first moved into his neighborhood, he noticed hundreds of frogs on the roads after a rain storm. Lately, Carter has seen less than four or five frogs on his five-minute drive through the neighborhood. Which of the recent events is a reasonable conclusion based on Carter's observations? A drought has impacted the population size of the frogs. A new housing development has led to extinction of the frogs. The beginning of the winter has created temperatures too cold for the frogs. Increasingly warm temperatures have dried the skin of the frogs leading to death.

Answers

If you think about a lot of frogs need water to sustain themselves because that is where they were born; in the water. So the answer would be that "A drought has impacted the population size of the frogs". Because of this drought, there is no water for the frogs, so they either die or find somewhere else to go.

Answer:  A drought has impacted the population size of the frogs.

Explanation:

The frogs are the amphibians who require both water and terrestrial habitats to survive and reproduce. The rainwater accumulates over the terrestrial regions can provide an ideal environment for the survival of the frogs.

According to the given situation, Carter noticed hundreds of frogs on the road after rain storm as the road environment was suitable for the survival of the frogs. But later on he observed less than four or five frogs. This may be because of the fact that the road might not be left with water which could be probably due to drought (a drought is a condition where a region does not receive appropriate amounts of rainfall which leads to the dry and hot environment).

In a lysogenic infection, once the dna of the virus is incorporated into the bacterial dna, the dna is called a

Answers

This is called a prophage.

Many biologists argue that the euglenoids should be classified as an animal-like protist rather than a plantlike protist

Answers

Euglenoids are a group of unicellular organisms with both animal-like and plant-like traits, leading to classification challenges. Taxonomy and phylogeny based on molecular genetics and genome analysis have led to a restructuring of the kingdom Protista into multiple monophyletic supergroups, taking into account convergent evolution.

The question addresses the classification of euglenoids, which are unicellular organisms with both animal-like and plant-like characteristics. This classification ambiguity arises because euglenoids exhibit mobility and some are heterotrophic, which are traits associated with animals, leading zoologists to sometimes refer to them as 'Euglenozoa'. On the other hand, some euglenoids are capable of photosynthesis, a plant-like trait, causing botanists to call them 'Euglenophyta'. The taxonomy and phylogeny of euglenoids, and protists in general, have been reshaped with the advent of molecular genetics and genome analysis. These analyses have revealed deep evolutionary branches within the domain Eukaryota, dividing it into several monophyletic supergroups. The classification continues to evolve as new genetic information is discovered, making clear that morphologically similar protists may not necessarily share a recent common ancestor—a concept known as convergent evolution.

Jenny is losing weight, has poor tolerance to heat, and has mood swings, high blood pressure, and a rapid heart rate. she has very high levels of thyroid hormone, high levels of tsh, and a goiter. which of these diagnoses is the most likely for jenny's condition?

Answers

The answer would be: defective receptors for thyroid hormone control by the anterior pituitary

Jenny condition match with hyperthyroidism where the body produces too much thyroid hormones. The cause of hyperproduction of thyroid hormone could be cancer in thyroid cells or disruption of negative feedback mechanism. In this case, negative feedback of anterior pituitary should be the problem.
Final answer:

The most likely diagnosis for Jenny's condition is Graves' disease, an autoimmune condition that leads to hyperthyroidism and can cause symptoms such as weight loss, poor tolerance to heat, and a goiter.

Explanation:

The most likely diagnosis for Jenny's condition based on the symptoms mentioned, including weight loss, poor tolerance to heat, mood swings, high blood pressure, rapid heart rate, high levels of thyroid hormone, high levels of TSH, and a goiter, is Graves' disease. Graves' disease is an autoimmune condition that leads to hyperthyroidism and can cause symptoms such as heat intolerance, weight loss, and a goiter. Additionally, Jenny's symptoms of rapid heart rate and mood swings are commonly experienced in hyperthyroidism. Treatment options for Graves' disease may include anti-thyroid medications, radioactive iodine therapy, or surgery to remove the thyroid gland.

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How can white blood cells tell the difference between body cells and pathogens?

Answers

Antigens work as bar-codes to help the immune system differentiate between body cells and pathogens

There are two bird species on a midwestern prairie that look very much alike physically and are probably descended from a common ancestor. during courtship, however, the males of one species stands on one leg while looking at the female. the males of the second species uses both feet to drum on the prairie floor. the females will only mate with those males who behave appropriately during courtship. what is this an example of?

Answers

I believe this is an example of Behavioral isolation. Behavioral isolation is an evolutionary mechanism that helps members of the same species identify each other as proper mates. It involves differences in courtship or mating behaviors; unlike temporal isolation which involves differences in the timing of courtship or mating behaviors

In general, you should give care to an ill or injured person until what happens?

Answers

In general, one should give appropriate care to an ill or injured person until ; One sees an obvious sign of life, such as breathing, or another trained responder or EMS personnel take over, or until one is too exhausted to continue with the care; or when the scene becomes unsafe

In a population with logistic growth, what happens when carrying capacity is exceeded

Answers

the answer you're looking for is OVERPOPULATION. Overpopulation is when the carrying capacity of the land is exceeded. I hope this answer helps u out on your test and have a great day.

You are looking at tissue under a microscope. One cell shows half the amount of DNA of some of the other cells. This cell is most likely to be in which phase of the cell cycle?

Answers

This cell is most likely in G1 phase. 

Describe one limiting factor for the moose population

Answers

Moose is the primary food source of wolves/ Predation

Wolves' main source of food is moose. This population seems to be being constrained by interactions between winter weather, predation on young calves, and dietary restrictions.

What is predation?

Predator is a term used to describe a creature that primarily hunts and eats other species. A species is referred to as a "predator" if it hunts and consumes particular other creatures. Prey is the term used to describe the creatures that predators eat.

Important density-dependent population controls include predator-prey interactions as well as prey-predator interactions. How each population changes in size depend on the size of the other population.

A density-dependent limiting factor kicks in when the population density reaches a certain level. Other examples of limiting factors that depend on density are competition, parasitism, and sickness.

Therefore, Wolves' main source of food is moose limiting factors for the moose population.

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What does the order of DNA bases have to do with the traits of an individual?

Answers

It tells you if your going to be tall or short big or Slim it can tell you your traits

How much time passed between the appearance of the first prokaryotic cells and the emergence of multicellular organisms?

Answers

Prokaryotes were the first organisms to evolve on Earth, so, the first prokaryotic cells appeared 3.8 billion years ago. After them, Eukaryotic unicellular organisms developed, when one cell engulfed the other cell (endosymbiotic theory). Those unicellular eukaryotes form multicellular aggregates and that represents an evolutionary transition from single cells to multicellular organisms. Multicellular organisms evolved from unicellular eukaryotes at least 1.7 billion years ago.

About 2 billion years passed between the appearance of the first prokaryotic cells and the emergence of multicellular organisms.

 

Final answer:

The first prokaryotic cells appeared about 3.5 billion years ago, while the first definite multicellular organisms with tissues evolved around 630-542 million years ago. Between these milestones, eukaryotic cells emerged about 2.1 billion years ago.

Explanation:

The evolution of life on Earth began with the appearance of the first prokaryotic cells around 3.5 billion years ago. These cells were the only life forms for about 1.4 billion years until the appearance of eukaryotic cells approximately 2.1 billion years ago. As eukaryotes evolved, they became more complex, leading to the development of multicellularity about 1.5 billion years ago. However, the oldest definite multicellular organisms with tissues, as evidenced from the Ediacaran period, evolved around 630-542 million years ago. It's important to note that these estimates are based on fossil records and genetic evidence, and exact timings may vary slightly based on different sources.

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