Melting glaciers and polar ice caps add fresh water to the ocean, potentially decreasing its salinity. The amount of change in salinity varies regionally and is influenced by various factors, including thermal expansion of water and increased acidity of the seas due to carbon dioxide absorption.
Explanation:As glaciers and polar ice caps melt due to global warming, a significant amount of fresh water that was previously frozen is added to the oceans. This influx of meltwater can dilute the seawater, potentially decreasing the overall salinity of the ocean. However, because the ocean is vast, the change in salinity is not uniform and can vary in different regions.
Melting sea ice, such as icebergs already floating in the ocean, does not directly contribute to changes in salinity since this ice is already part of the ocean's water volume. In contrast, the melting of land-based ice, such as glaciers, adds fresh water not previously accounted for in the sea level, which can reduce the salinity of the seawater around the melting points.
Meltwater from glaciers, combined with the thermal expansion of seawater as it warms, contributes to the rise in global sea levels. This phenomenon not only affects global circulation patterns by altering the density and thus the buoyancy of seawater but also poses a threat to marine ecosystems and coastal communities through increased acidic seas and changing shorelines.
High blood levels of the amino acid ________ have been linked to increased risks of cardiovascular disease.
A crossover in meiosis is an exchange of genetic material between
A crossover in meiosis is the exchange of genetic material between two homologous chromosomes during the prophase I of meiosis. This process adds to the genetic diversity of offspring.
Explanation:A crossover in meiosis is an exchange of genetic material between two homologous chromosomes. This process occurs during the prophase I stage of meiosis. Each chromosome aligns with its partner chromosome, and they exchange segments of their DNA in a process known as 'crossing over'. This results in chromosomes that have a mixture of both parent's genes and thereby adds to the genetic diversity of offspring.
Learn more about crossover in meiosis here:https://brainly.com/question/33538641
#SPJ12
At higher doses, __________ can cause hallucinations, feelings of strength, seizure, and coma.
Answer:
ketamine , dextromethorphan & PCP - D. All of the above
Explanation:
If a man's vas deferens is surgically cut and tied off how will it affect him?
Answer:
Vasectomy is a surgical procedure which is used for male sterilization. In this procedure vas deference of male is cut and tied so that the sperms cannot enter into the urethra.
This will not the process of fertilization and this is a very effective way of birth control. This is very economical method of birth control and less time taking process.
why do scientists believe that life first emerged from the ocean and onto land well after the ancestors of modern day cyanobacteria populated the earth
Answer:
Since the ancestors of modern day cyanobacteria added oxygen to the primitive reducing atmosphere of earth.
Explanation:
The primitive atmosphere of the earth did not have oxygen. So, life was not possible on land. The ancestors of modern-day cyanobacteria had the ability to carry out oxygenic photosynthesis which in turn releases oxygen as a by-product. Hence, these ancestors of modern-day cyanobacteria populated the land and added oxygen to the atmosphere of the earth.
Once enough oxygen was added to support the other life forms, aquatic life forms gradually started occupying the land habitats.
The myocardium receives oxygenated blood from the __________, which originate(s) from the __________.
The myocardium receives oxygenated blood from the coronary arteries, which originate from the aorta.
Explanation:The myocardium receives oxygenated blood from the coronary arteries, which originate from the aorta.
Learn more about blood circulation here:https://brainly.com/question/24820144
#SPJ6
One function of the gallbladder is to ____.
The gallbladder's primary role is to store and concentrate bile, a digestive fluid which helps in the digestion of fats in the small intestine. It releases bile when we consume a high-fat meal.
Explanation:The primary function of the gallbladder is to store and concentrate bile, a digestive fluid produced by the liver. Bile aids in the digestion of fats in the small intestine. When we consume a meal, especially one that is high in fat, the gallbladder contracts and releases this stored bile into the small intestine through a series of ducts, facilitating the digestion process.
Learn more about gallbladder here:https://brainly.com/question/36743611
#SPJ6
The Paleocene epoch left a thin layer of rock that is extremely rich in ______ fossils.
1.Fish
2.Mammal
3.Fern
4.None Of The Above
What genetic describes a change of the sequence of a dna molecule?
DNA stands for deoxyribonucleic acid. It has a double strand that contains the genes (a hereditary material) of the organism. The DNA are composed of a nitrogenous base, phosphate and a sugar (deoxyribose). The bases are adenosine, tyrosine, uracil and guanine. And they are needed to be matched to carry the trait. The nitrogenous base are the traits that contains the genetic material and are mostly composed of nucleic acids. James D Watson and Francis Crick are the first scientist to formulate an accurate description of the DNA’s (deoxyribonucleic acid) complex , double-helical structure. They discovered that base pairing nucleotides must be; adenine and thymine; and cytosine and guanine. These base pairs are held together by a hydrogen bond, a type of chemical reaction that s easy to break and easy to reform. The statement is “DNA is a double helix made of two strands linked together with hydrogen bonds.”
Which part of a nucleotide contains genetic information?
Answer:
nitrogenous base
Explanation:
the order of the bases in the structure determines genetic code. each base has an instruction. so, nitrogenous bases.
Which biome has the greatest area on earth?
The largest biome according to land in the world is Taiga, also known as boreal. It covers almost 30% of the world’s forest and by country it covers the land of North America, Canada and Russia. There are many categories of biomes according to their specific quality or reason like dessert, rainfall etc.
In two or more complete sentences, explain the relationship between climate change and the greenhouse effect.
The relationship between climate change and the greenhouse effect is that when the rate of the greenhouse effect may increase, it directly impacts the phenomenon of climate change in negative aspects.
What is Climate change?Climate change may be defined as significant and major changes in global temperature, precipitation, wind patterns, and other measures of climate that remarkably takes place over several decades or longer.
Climate is the long-term pattern of weather in a particular area. It can typically provoke global weather patterns due to human activities. It consists of changes that typically result from different factors, like deforestation, and the combustion of fossil fuels that stimulate an increase in greenhouse gases.
Apart from this, Global warming is one type of climate change, and it refers to the gradual increase in temperature of the surface of the Earth.
To learn more about the Greenhouse effect, refer to the link;
https://brainly.com/question/19521661
#SPJ2
Cells that gather information and control body functions are ________.
A student wants to determine how his classmates feel about school. He does a survey away from school so all participants will be willing to answer freely. In several cases, younger siblings of his classmates are present, so he lets them take the survey too. He surveys a total of 50 students. Has he done a well-designed, controlled experiment?
Answer: No. His independent variable is not controlled.
Explanation:
The graph above shows the progress of an enzyme-catalyzed chemical reaction. Based on the graph, this enzyme
A. works optimally at 5°C
B. works optimally at 33°C
C. begins to denature above 25°C
D. begins to denature below 20°C
The right answer is C. begins to denature above 25°C
In biochemistry, denaturation is the process by which a biological macromolecule, nucleic acid or protein loses its normal three-dimensional conformation: the proteins lose their folding and unfold, the paired strands of the nucleic acid duplexes separate. This three-dimensional conformation is most often necessary so that the biological macromolecules can fulfill their function and thus the inactive denaturation in general these biological macromolecules.
Denaturation can be done by:
*Temperature: The increase in temperature causes thermal agitation of the atoms of the molecule. This causes a break in intermolecular interactions.
*PH change
*Radiation
*Chemical agents: chaotropic agents, bases, acids, reducing agents, detergents, heavy metal ions.
Euglenoid chloroplasts resemble those of what?
Answer:
The correct answer is green algae.
Explanation:
Euglena is unicellular flagellate protists found in the freshwater rich in organic material.
They show both modes of nutrition that is heterotrophic and phototropic. Their phototropic mode is due to the presence of chloroplasts with three membranes which produce energy through photosynthesis.
The chloroplasts of Euglena resembles the chloroplast of green algae and thought to have evolved from green algae and not directly from blue-green algae or cyanobacteria as the third membrane of Euglena is originated from the plasmalemma of the symbionts.
Thus, green algae are the correct answer.
Your friend says the helium in your birthday helium balloon comes from radioactive decays. what is your response?
Final answer:
Yes, the helium in your birthday balloon originally comes from the decay of radioactive elements such as uranium. This helium is trapped in natural gas deposits, extracted, and compressed into cylinders for various uses, including filling balloons.
Explanation:
Your friend is correct. The helium gas in your birthday balloon does indeed come from the decay of radioactive elements like uranium. In the earth's crust, uranium-238 and other radioactive elements undergo radioactive decay, releasing alpha particles. Each alpha particle consists of two protons and two neutrons, which is essentially a helium nucleus. Once these alpha particles capture two electrons, they become helium atoms. This process happens over millions and billions of years, and the helium produced can get trapped in natural gas deposits, which are then extracted and eventually filled into your balloons.
The process of getting helium into a balloon involves extracting it from the earth, where it has been generated through radioactive decay, and then storing it in large metal cylinders under high pressure. When you buy a helium-filled balloon, the seller fills it from one of these cylinders. The ability of helium to leak through the balloon material over time is due to its small atomic size, leading to the balloon deflating.
Ocean gyres can _________. Select all that apply. A. make hot climates cooler B. make hot climates warmer C. make cool climates cooler D. make cool climates warmer
Answer:
Option (A) and (D)
Explanation:
Ocean gyres are the system of oceanic water circulation that occurs due to the prevailing wind patterns and the forces that are initiated by the rotation of the earth. This continuous motion of ocean gyres forms a conveyor belt that circulates the water from the equatorial to the polar regions in both the hemisphere. It maintains the overall temperature, amount of nutrients, and the salinity of the ocean water.
These ocean currents are diverted towards the right by the Coriolis force that occurs due to the earth's rotation.
The ocean in the equatorial region is warmer than the water at the higher latitudes. It is because of the higher amount of sunlight that falls in this region. At higher latitudes, the temperature is relatively low and there the waters are much colder.
These ocean currents circulate in both the hemisphere, carrying the hot and warm water from the equator to the polar region and in return, carries the cold water from the polar to the equatorial region.
Thus, it can replace a hot climate by a colder one and a cold climate by a hotter one.
Hence, the correct answers are an option (A) and (D).
The human abo blood group is controlled by a single autosomal gene with three alleles, ia, ib and i. individuals with either the iaia or iai genotypes have blood type a; those with ib ibor ibi have blood type b; those with iaib have blood type ab; and those with ii have blood type o. imagine a mother with type-a blood, and a father with type-b blood have a baby with type-o blood. what is the probability that any given child of this couple will have type-o blood?
The people in a location in Florida depend on groundwater for their supply of drinking water. The groundwater in the location has been tested recently and the nitrate and phosphate levels have been found to be very high in the groundwater. What are people in the location most likely to do?
start drinking bottled water
reduce their water consumption
start storing rain water for drinking purpose
install water filtering equipment in their houses
Answer:
D
Explanation:
How many external openings are located at the poster of the frog’s body (for reproduction, urination, and defecation)?
Describe the process of speciation. include in your discussion the factors that may contribute to the maintenance of genetic isolation.
The process of speciation is the separation of a specific population into different species. The factors that may affect to maintain this genetic isolation are: allopatric, sympatric, prezygotic and postzygotic barriers. Allopatric barriers occurs when two species that are of the same family before cannot go back to the way they were before unless a contact between the two is established again. Sympatric are a group of species that shared the same family before but forced to evolve separately due to environmental factors. Prezygotic barriers are a group of species that are formed from the developing fertilized egg.
What is the difference between bactericidal and bacteriostatic agents?
Juan believes that robins are a good example of a bird. sergei believes that penguins are a good example of a bird. juan and sergei are both correct according to the ________ model of organizing concepts.
Final answer:
Juan and Sergei are both correct according to the prototype model of organizing concepts, which suggests our minds organize concepts around prototypical examples, like robins for birds, but can still include less typical examples, like penguins.
Explanation:
Juan believes that robins are a good example of a bird, and Sergei believes that penguins are a good example of a bird. Both Juan and Sergei are correct according to the prototype model of organizing concepts. In psychology and cognitive science, the prototype model, first articulated by Eleanor Rosch, suggests that our minds organize concepts around prototypical examples. These prototypical examples embody the most common characteristics of a category but don't necessarily include all members of that category. Robins, for example, are seen as more prototypical birds because they exhibit characteristics commonly associated with birds, such as the ability to fly and build nests in trees. Penguins, while less prototypical, still fall within the bird category despite lacking these characteristics because they possess other defining bird traits, such as having feathers and laying eggs.
In the little albert study, an 11-month-old boy was taught to fear a rat through the use of ______.
a. classical conditioning
b. hypnosis
c. operant conditioning
d. punishment
The percentages of the daily values on food packages are given in terms of a person requiring _____ calories each day.
Answer:
27% I think, I'm not sure
Explanation:
What theory suggests that our body's dna genetic code contains a built-in time limit for the reproduction of human cells?
______ causes diffusion of new water molecules out of the xylem and into the leaf.
1.Transpiration
2.Pollination
3.Photosynthesis
4.None Of The Above
Answer:
1. Transpiration
Explanation:
Transpiration is a physiological process by which plants lose water in the form of vapours through the aerial parts of a plant. Transpiration may be stomatal, cuticular or lenticular. But most of the transpiration is carried out through stomata. It is a wasteful process but it is necessary for the plants as it promotes water absorption and gives a cooling effect to the plants.
What consequences of heavy drinking do men and women experience differently? select all that apply?
Which of the following is a method used to prevent soil depletion?
a-Adding fertilizers
b-Planting grasses on slopes
c-Dune fences
please help please