Answer:
Coral reefs are under threat if atmospheric carbon dioxide levels continue to rise, new research has shown. When CO2 dissolves in the ocean, it raises the water's acidity level. This prevents a build up of calcium carbonate, which corals draw from seawater to build their skeleton
Explanation:
If atmospheric carbon dioxide continues to rise it creates a threat condition to coral reefs to their skeletons.
What are coral reefs?According to recent research, coral reefs are in danger if atmospheric carbon dioxide levels keep rising. The ocean's water becomes more acidic as a result of CO₂ dissolving there.
This hinders the buildup of calcium carbonate, which corals use to create their skeleton from saltwater. More CO₂ is absorbed by the seas when CO₂ emissions rise.
The water is getting warmer as a result of increased greenhouse gas emissions. In water that is too much warmer or colder than 26–27 degrees celsius, coral cannot survive.
Therefore, as a result, coral has a tougher time developing its shells since the water becomes more acidic.
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Where in the cell is dna copied into rna? Cytoplasm or the nucleus
Answer:
nucleus
Explanation:
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what is the relationship between UV radiation and skin color?
Answer:
Since strong sun exposure damages the body, the solution was to evolve skin that was permanently dark so as to protect against the sun's more damaging rays. Melanin, the skin's brown pigment, is a natural sunscreen that protects tropical peoples from the many harmful effects of ultraviolet (UV) rays.
Explanation:
If you took DNA samples from two strangers on a street, how similar would
their DNA be?
A. 100% the same
B. 95.5% the same
C. 99.9% the same
D. 90.0% the same
If one took DNA samples from two strangers on a street, the two DNA samples will be 99.9% the same (option C).
What is DNA?DNA is the part of a living organism that carries or stores genetic information.
The DNA molecule is made up of four nucleotide bases namely;
AdenineGuanineCytosineThymineHowever, the DNA of every living organism is the same with the difference lying in the arrangement of the nucleotide sequence.
Therefore, if one took DNA samples from two strangers on a street, the two DNA samples will be 99.9% the same.
The 0.1% difference is attributed to the mutations that might have occured in the genome.
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Why is an organism's variation important?
A Variation ensures that some members of the species survive changes in the environment.
B Variation is what natural selection acts upon and leads to new traits over time.
C Different variations are helpful in different environments, allowing certain genes to be passed on to favor certain traits.
D All of the above are correct.
I NEEEEDDD HELP PLEASE
Answer:
Male with attached earlobes
Which is the last structure to contact sperm before it leaves the body?
penis
sperm duct
testes
urinary bladder
Answer:
A is correct
Explanation:
Urinary bladder is the last structure to contact sperm before it leaves the body.
What are the functions of urinary bladder?The urinary bladder, or simply bladder, is a hollow organ in humans and other vertebrates that stores urine from the kidneys before disposal by urination. In humans the bladder is a distensible organ that sits on the pelvic floor.
The urine formed by the nephrons of the kidneys is transported to the urinary bladder for storage before it gets expelled through the urethra. The urinary bladder is a sac that serves as a reservoir for urine.
The urinary bladder is a temporary storage reservoir for urine. It is located in the pelvic cavity, posterior to the symphysis pubis, and below the parietal peritoneum. The size and shape of the urinary bladder varies with the amount of urine it contains and with the pressure.
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what is the second biggest insect on earth
Answer:
probably a big spider
Explanation:
How does the body regulate dopamine
Answer:
Self discipline
Explanation:
Answer:
Inside the brain, dopamine plays important roles in executive functions, motor control, motivation, arousal, reinforcement, and reward, as well as lower-level functions including lactation, sexual gratification, and nausea. The dopaminergic cell groups and pathways make up the dopamine system which is neuromodulatory.
Explanation:
Striatal dopamine release is mediated by vesicular exocytosis. Active zone-like sites are required for rapid and efficient dopamine secretion. Localized dopamine release generates signaling hotspots and is powerfully regulated. Some striatal dopamine release is independent of ascending action potentials.
Multiple Choice
The current atomic model would be revised if
A. better microscopes were being used to study its structure.
B. better microscopes are invented in the future.
C. new information about an atom’s structure is discovered.
D. a new element is discovered in the future.
The following passage describes inheritance.
Complete the passage by writing a suitable word or words on each dotted line.
A gene is a section of a double-stranded molecule known as
This molecule is found within the
of the cell,
contained in threadlike structures called
The two strands form a double helix linked by a series of paired bases.
The base adenine is always linked to
and the base cytosine
is always linked to
Your answer
Answer:
A gene is a section of a double-stranded molecule known as DNA. This molecule is found within the nucleus of the cell, contained in threadlike structures called chromatin. The two strands form a double helix linked by a series of paired bases. The base adenine is always linked to thymine and the base cytosine is always linked to guanine.
The total number of fossils that have been discovered and the information derived from them is called the...
A. Chronological order
B. Common ancestry
C. Sedimentary block
D. Fossil Record
E. Metamorphic rock
F. Nitrogen dating
G. Timeline
1. how many times does interphase occur before mitosis? ____
2. how many times does interphase occur before meiosis? ____
why are maggots bred in a sterile environment
A lack of sufficient information and data of population size and growth of Atlantic cod is one of many reasons to explain the mismanagement and current decline in Atlantic cod population, Based on your understanding of logistic growth model, if one day atlantic cod recovered in Gulf of Maine, you would recommend to maintain the cod population at _______________ point of the logistic growth model at which population would show the fastest growth rate.
ANSWER: LOG PHASE/POINT
EXPLANATION: The log phase of logistic population growth witness the fastest growth rate. It's the phase where there is rapid growth exploiting the high resources supplied.
Moreso, the population continues to grow rapidly approaching the carrying capacity (i.e the highest population size that the resources available in the ecosystem can sustain). On getting to the carrying capacity the ecosystem can withstand, the growth rate adjusts and move inline with the carrying capacity. It's also referred as exponential phase.
I need help with 1-9 ❓
Answer:
its 8
Explanation:
because if you have 9 apples a you eat on you are left whith 8
Assessment started: undefined.
Item 1
Resources from the ocean are found in many regions, but the majority of all resources are located in which of the following regions?
abyssal plain
deep ocean
continental shelf
pelagic zone
Answer:
Resources from the ocean are found i many regions, but the majority of all resources are located in which of the following regions? continental shelf.
Explanation:
Similar body parts with different purposes found in different animals are known as:
-the fossil record
-homologous structures
-vestigial structures
-similar embryo development
Homologous structures
Question 2 (0.5 points) In the Northern Hemisphere, choose ALL that apply Summer solstice occurs when the Earth's North Pole is tilted toward the sun, longest day. Summer solstice occurs when the Earth's North Pole is tilted away from the sun shortest day. Winter solstice occurs when the Earth's North Pole is tilted away from the sun. shortest day. Winter solstice occurs when the Earth's North Pole is tilted toward the sun. longest day.
Answer:
In North America, around June 21, Earth tilts on its axis toward the sun, which is Summer Solstice and when the Northern Hemisphere has the most daylight of any time of year. Winter solstice the Northern Hemisphere tilts the farthest away from the sun and when we have the least amount of daylight of any time of the year.
Explanation:
As Earth revolves around the Sun, it rotates on its axis. Sometimes Earth tilts toward the Sun which is when Summer occurs. In the Winter Earth tilts away from the Sun.
In the northern hemisphere summer solstice occurs when the earth north pole is tilted towards the sun, longest day and winter solstice when the earth north pole is tilted away from the sun shortest day . Thus both the option a and c are correct.
What are solstices?Solstices occurs when earth is pointed directly towards the sun. This incident happens twice a year during earth's orbit.
On June 21 the north pole is tilted 23.5 degree towards sun and the northern hemisphere experience summer solstices which is known as longest day of the northern hemisphere year.
On 21 June, the southern hemisphere is tilted 23.5 degree away from sun and southern regions of earth experience the shortest day of the year which is known as winter solstices.
Therefore In the northern hemisphere summer solstice occurs when the earth north pole is tilted towards the sun, longest day and winter solstice when the earth north pole is tilted away from the sun shortest day . Thus both the option a and c are correct.
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The term for a cross that involves just one trait, such as pod shape, is called a what?
All the biological macromolecules contain carbon, hydrogen and oxygen. However, most do not contain nitrogen. The category that
contains nitrogen are
A) Lipids
B) Proteins
C) carbohydrates
D) unsaturated fats
Answer:
A. lipids
Explanation:
Suggest why energy from the sun flows in one direction while materials are cycle within an ecosystem
Answer:
Energy flow in an ecosystem is unidirectional. It means that energy which is absorbed by the producers from sun and is converted into chemical energy, always flow from a lower trophic level to a higher trophic level as in a food chain when herbivore consumes producers the energy is transferred from producers to consumers and so on. Some of this energy is assimilated some is used by the organism and some is dessipated in the environment but the flow of energy is never reverted, that is obviously a producer can not consume a consumer.
Which is true of scientific methods?
Ο Α.
A. They include a set number of steps to follow in order
B. To be fair, they must include the use of a model.
o
C. Only some of the hypotheses have to be testable,
O D. They help scientists organize their investigations.
Answer:
A. They include a set number of steps to follow in order
Bacteria are used in food industry for the production of ?
(a)curd
(b)cheese
(c)butter
(d)all of the above
Answer:
D.) All of the above
Explanation:
Bacteria has become a major component in the processing of dairy products because of various factors. The distribution of bacteria aids factors like ripening and flavor development of cheese and curd and also aids fermentation.
Curd, cheese and butter production all involve the use of bacteria.
The bacteria commonly used to make curd is lactobacillus bacteria.
The bacteria commonly used to make cheese are lactococcus, lactobacillus and streptococcus genera
The bacteria commonly used to make butter are lactococcus and leuconostoc .
which statement best describes the molecular structure of protein, along with one of the functions of proteins? it is a straight chain hydrocarbon that can help fight disease
Protein are the vital part of any organisms as it helps in growth and repair. The statement that best describes the molecular structure of a protein is option B, i.e., It is a complex, folded chain that helps regulate cell processes.
What is the need of protein folding?Protein has four main structures, namely primary, secondary, tertiary and quaternary structure. It is a complex, folded chain that helps regulate cell processes.
Each structure differ from each other in the way of folding.
The folding of protein makes the protein active to determine its main functions.
Thus, the correct option is B.
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True or false. Can you provide any evidence?
1. When species come into contact with closely related species, they interbreed and become one species again
2. Medium ground finches with relatively large beaks tend to have offspring with relatively large beaks
3.Birds with a beak type poorly shaped for the current environment are able to adapt by changing their beak types
4. Speciation, or the evolution of new species, in Galapagos finches results because natural selection favors different beak types on different islands.
False When species come into contact with closely related species, they interbreed and become one species again.
What process lead to the speciation of the Galapagos finches on the different islands?
All of them grew from one progenitor species, which inhabitated the islands only a few million years ago.
This process, whereby species develop rapidly to use empty ecospace, is called as adaptive radiation.
Thus, its false, When species come into contact with closely related species, they interbreed and become one species again since its an example of evolution.
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Question: What is the ground breaking research that involves protein synthesis?
Answer:
Protein synthesis is the process through which cells capture DNA and chemical which cells read DNA and build the molecular components of new cells
Explanation:
A person who has one recessive allele for a trait that can potentially pass that trait to an offspring.
A) Carrier
B) Genetic Disorder
C) Sex-Linked Gene
D) Down’s Syndrome
Plz I need answers ASAP. Thx And btw I dont know how to make the brianliest. Tell me how to so I can make you one!
Explanation:
Carrier. Btw I don't need brainiest lol
Write the chemical equation for water?
Answer
H2O
Explanation:
Water is made up of hydrogen atom ,valency 1 and oxygen atom , valency 2
On combining , they exchange their valencies giving H2O where 2 is a subscript
7. Sister chromatids are
5 points
0 (1) found when cell is not dividing
(2) Unique to prokaryotes
(3) tightly linked together at the centromere
Answer:
3!
Explanation:
The reproductive system of a male mammal provides
(1) support for the internal development of the embryo
(2) materials through the placenta
(3) a means for the delivery of sperm cells
(4) the ovaries for egg production
