Answers
Answer:
Marine mining is a process that can be done by dredging the seabed and is used for the extraction of mineral resources from the seabed, which are non-renewable, with a negative impact on marine ecosystems.
Explanation:
The illustration shows a process of marine mining by dredging, where the resource extracted is of a mineral nature, like copper, zinc, silver and gold. Gravel used for construction can also be extracted from the sea. Mineral resources extracted from the sea are not renewable.
The process of marine mining can be harmful to the ecosystems there, so it must be a process that requires control and management from the ecological point of view.
Two possible consequences of not regulating marine mining are:
Destruction of the habitat of life forms present on the sea floor, which endangers many species and even forces migration to more stable areas, with consequences on the food chains. Extinction of marine species that inhabit the seabed. The flora and fauna of the sea floor usually have slow reproductive cycles and, in the case of fish, spawning takes place on the bottom of the sea. Mining endangers the reproductive cycles of the species, leading to induced extinction.Responsible and controlled mining activity can be useful for humans, while avoiding negative consequences on the ecosystems that exist at the seabed.
Related Questions
Recall that heterozygous individuals show the _______________ phenotype but still have a ________________ allele in their genome. These individuals are called ____________________.
Answers
Answer:
Dominant, recessive, heterozygotes.
Explanation:
A heterozygote (heterozygous), individual has one dominant and one recessive allele. So to fill out this answer you have to remember that information.
The dominant trait is always shown over the recessive.
Hope this is correct, have a great day!
During which phase of the cell cycle do sister chromatids first appear?
M phase
G1 phase
S phase
G2 phase
Answers
Help please due by midnight
Answers
Answer:
Contral group, independent veribal, Experitmental, and dependent group
Explanation:
An entire species of rare flying insects have gone extinct. Out of every three individuals of an extinct animal, two of the three carried a defective gene. How many animals carried the normal gene in a population of 300?
Select one:
a. 100
b. 400
c. 300
d. 200
Answers
Answer: It would be, a 100
S. cerevisiae occurs in nature on ripe fruit. S. epidermidis naturally occurs on human skin. How do experimental results relate to the natural environment of each microbe?
Answers
Answer:
S. cerevisiae needs natural environment present on ripe fruit while S. epidermidis needs natural environment present on human skin.
Explanation:
S. cerevisiae occurs in nature on ripe fruit because the environment is suitable for them that provides food in the form of sugar while S. epidermidis naturally occurs on human skin because it needs wet and humid environment which is available on human body such as armpits. Due to the presence of suitable environmental condition, both S. cerevisiae and S. epidermidis are present on fruits and human skin respectively.
Some examples where you have seen a chemical change and the mass has stayed the same
Answers
it is only found in the plant cells that support the plant which is also made of specialized sugar called cellulose
Answers
Grass starts with 30,000 kcal of energy. A cheetah would acquire ( ? ) kcal of energy after it ate a zebra that had consumed the grass.
Answers
Answer:
300
Explanation:
on edge2021
If zebra get 10% energy of 30,000 kJ which is 3,000 kJ of energy. Then Cheetah gain the energy of 300 kcal via energy transfer.
What are the levels of energy transfer in a food chain?
In an ecosystem, the Food chain is the cyclical event among producer, consumer, decomposer and energy in the form of food.
A feeding level through which energy in the form of food is transferred from one organism to other in an ecosystem called as trophic level.
Primary producers which are plants and algae, Primary consumers are the herbivores and Secondary consumers are both carnivores and omnivores, Tertiary consumers and quaternary consumers are carnivores.
Autotrophs can convert light energy to chemical energy via photosynthesis, then to primary consumers followed by secondary consumers and finally transferred to the tertiary consumers.
The energy transferred to each level remains 10% only.
Thus cheetah would acquire 300 kcal of energy.
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how many kilometers will the pacific plate travel in 1 million years
Answers
Answer:
The Pacific plate travels approximately 107 km in a million year.
Explanation:
Modern Spreading Rate (R) = distance the seafloor moved in km (d) / age in million years (t)
R = d/t
To calculate it in millimeters per year we need to convert it:
1 km = 1000 m
1 m = 100 cm
1km = 100,000 cm
We know by the theory that the Pacific plates might be moving approximately between 10.6 - 10.75 cm/year. So, we might say that it moves 10.7 cm/year. So,
The Pacific plate moves 10.7 cm in one year
1 year-------------------------------- 10.7 cm
1,000,000 years ----------------- X = 10700000 cm
100,000 cm -------------- 1 km
10700000 cm -----------X = 107 km.
The Pacific plate moves approximately 107 km/my.
The membrane that surrounds a Golgi apparatus is very similar in structure to other membranes in the cell. Damage to the Golgi apparatus would disrupt which of the following processes ? The breakdown of glucose to generate ATP The degradation of waste products The modification and sorting of proteins destined for secretion The translation of mRNA into proteins
Answers
The modification and sorting of proteins destined for secretion
Since this is the role of the golgi aparatus(synthesis of glycolipids for example)
The first statement is the role of the mitochondria
the second statement is the role of the lysosome
the fourth statement is the role of the ribosome
A similarly between the nervous system and the hormone-secreting system in humans is that they both
Answers
they both help to maintain homeostasis.
What is a plant according to biology?
Answers
Answer:
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muaiihfhdhfhfhffhdhrhhfhhfhhchfhfhfhfhfhdhfjufjfjfjfufuguugititkg7hdnd7hdjjjjjjnnnnnnnnbbbgffttyyhhnnnnnnnjjjji7nd7hec
Explanation:
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what are the plant organ systems
Answers
Answer:
roots
leaves
the stem
reproductive organs, such as male and female sex organs in flowers
Explanation:
What important events happen during the Krebs cycle? (Choose all that apply)
a.uses oxygen to form carbon chains and store energy
b.builds up and breaks down carbon chains; carbon is then released as carbon dioxide
c.breaks down oxygen molecules to produce ATP
d.releases energy in the form of FADH2 and NADH
Answers
Answer: B, D
Explanation:
B, because as the cycle starts it adds more electrons, and then it decreases.
D, (Check the Diagram) FADH2 and NADH is used in the electron transport chain, the next step in the process, to form hydrogen ions.
The important events happen during the Krebs cycle are; b.builds up and breaks down carbon chains; carbon is then released as carbon dioxide. d.releases energy in the form of FADH2 and NADH
What is Krebs cycle?The Krebs cycle is a metabolic cycle which is part of the respiration process. Is necessary to process the glucose of the food. It starts with glucose then through acetyl Coenzyme, and then in citrate, the cycle starts.
Trough 7 chemical reactions, Krebs cycle will be produced some other chemical substances but the most important is that is going to form ATP, the energetic coin in living things.
FADH2 and NADH is used in the electron transport chain, the next step in the process, to form hydrogen ions.
The important events happen during the Krebs cycle are;
b.builds up and breaks down carbon chains; carbon is then released as carbon dioxide
d.releases energy in the form of FADH2 and NADH
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When comparing proteins and polysaccharides, the following similarities
can be identified:
Both consist of linked monomers via the process of dehydration reactions
Both consist of linked monomers via the process of hydrolysis.
Both consist of linked sugars via the process of dehydration synthesis.
O O
Both consist of linked amino acids via the process of hydrolysis.
Answers
Answer:
The comparison of proteins and polysaccharides establishes that they have similarity in both consist of linked monomers via the process dehydration reactions.
Explanation:
Both proteins and polysaccharides are polymers whose structure consists of the union of monomers. In the case of proteins the monomer is the amino acid, while in the polysaccharides can be glucose molecules.
The process of polymer formation is called polymerization, and one of the reactions that this process allows is polycondensation, where a water molecule is lost in the union of monomers.
The loss of water in a chemical reaction involves dehydration, a characteristic shared by the processes of adding monomers to proteins and polysaccharides.
The other options are not correct, because
Hydrolysis produces the rupture of molecules, with the intervention of water.Only polysaccharides are sugars bound by the dehydration synthesis process.Only proteins consist of amino acids linked through the process of hydrolysis.All of the following are examples of the evidence that supports the endosymbiotic theory EXCEPT A. Mitochondria and chloroplasts divide in a process resembling binary fission. B. Mitochondria and chloroplasts are similar in size to bacteria. C. Mitochondria and chloroplasts have linear chromosomes. D. Mitochondria and chloroplasts have their own genomes.
Answers
Answer:
All of the following are examples of the evidence that supports the endosymbiotic theory EXCEPT for option C. Mitochondria and chloroplasts have linear chromosomes.
Explanation:
The endosymbiotic theory essentially states that some organules of the eukaryotic cells, such as mitochondria and chloroplasts, were once free-living bacteria. Probably, these organisms must have been phagocytosed, but not digested by another cell. On the contrary, these bacteria were able to adapt to their host so that the two cells established a dependent relationship with each other.
Due to its similarities to other free-living bacteria, it is speculated that chloroplasts must derive from cyanobacteria and that mitochondria must derive from rickettsias.
This theory is supported by a few characteristics of the chloroplasts and mitochondria that suggest they were once a free cell. For example,
Both organelles present their own genetic material. This DNI is bi-catenary and circular, identical to the bacterial DNA, and very different from the eukaryotic cell´s DNA. These organelles divide by binary fission (not by mitosis) and can synthesize their own ribosomes and organelles. Both organelles present a double membrane, a characteristic that reinforces the idea of being phagocyted. The internal membrane looks identical to the bacterial membrane, while the external membrane looks like the eukaryotic one. The sizes of the organelles are similar to the size of some procaryotes.
Please answer this is super easy 6th grade science! Thanks!
Answers
Answer:
The answer should be A. lithosphere.
Explanation:
Firstly, let's look at the options:
C. and D, both parts of the Earth at the core, have almost nothing to do with the Earth's crust or tectonic plates except maybe having a passive effect on them.
B. mantle is where the lava that moves the tectonic plates circulates due to convection, which is the reason they move at all. But, it is not where the tectonic plates themselves are.
Therefore, finally, we have A as the answer.
(As a sidenote, the "lithosphere" means the Earth's crust.)
Hope this helped!
The adipose tissue metabolism of patients suffering from Von Gierke disease resembles the adipose tissue metabolism of a __________ individual.
A) Healthy
B) Starved
Answers
Answer:
The correct option is B
Explanation:
Von Gierke disease is an inborn error of metabolism (hereditary disorder) in which the body cannot convert glycogen (storage form of glucose in liver and muscle) back to glucose. This disorder is caused by the deficiency of the enzymes glucose-6-phosphatase or glucose-6-phosphate translocase. This generally causes blood sugar to be low (since liver releases this excess sugar to the body in the form of glycogenolysis when the body needs it).
Since the body cannot derive energy from the glucose present in the liver and muscle, the adipose tissue which is a storage site for energy in the form of fat is usually depleted as it becomes the alternative path for energy production (for some organs) just as in a starved individual who has had his/her glycogen storage depleted.
What does yeast produce during aerobic cellular respiration?
Answers
Answer:
Carbomdioxide and water
Explanation:
Yeast is a unicellular fungus that is capable of both aerobic and anaerobic cellular respiration depending on the availability of oxygen. Yeast undergoes aerobic respiration in the presence of oxygen but undergoes fermentation (anaerobic) in the absence of oxygen.
However, like every other organism, yeast undergoes aerobic cellular respiration to yield CARBON DIOXIDE (CO2) AND WATER (H2O) as products.
Mystery Bull
pls help me
Answers
Answer
there
Explanation:
hope this helps
2. One organ system may be composed
of many
organelles
organs
Answers
because a group of organs that function together make up an organ system
In a population of guinea pigs, short hair is dominant to long hair. If 25 percent of a breeder's guinea pigs
hair, what is the frequency of the recessive allele (q)?
O 5 percent
O 15 percent
25 percent
50 percent
Answers
Answer:
50% i checked
Explanation:
Why some bacteria produce Nanoparticles when grown on trace elements?
Answers
Answer:
· As particles get smaller, their magnetic properties, particularly with regard to temperature, also diminish. However, several strains of bacteria produce magnetite – fine, uniform nanoparticles that have desirable magnetic properties. These magneto tactic bacteria use a protein to form crystalline particles about 50 nanometers in size.
Fine particles have a diameter range of 100 to 2500 nanometers, while ultrafine particles have a diameter range of 1 to 100 nanometers.
What are Nanoparticles?Size-related characteristics present in tiny particles may or may not be present in nanoparticles. Even though individual molecules are ultrafine particles, they are not typically referred to as nanoparticles.
Nanoclusters have a restricted size distribution with at least one dimension between 1 and 10 nanometers.
On the other side, nano powders are aggregations of nanoparticles, nanoclusters, or ultrafine particles. Nanocrystals are crystals with a size smaller than a nanoparticle.
Therefore, Fine particles have a diameter range of 100 to 2500 nanometers, while ultrafine particles have a diameter range of 1 to 100 nanometers.
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What is NOT true about cellular respiration? SELECT AN ANSWER It is necessary for survival. It is a process where energy in food is changed into energy that can be used by the body's cells. It is a process that is not needed if the organism eats the energy-rich food directly. Humans are capable of this process.
Answers
Answer:it is a process that is not needed if the organism eats energy-rich food directly.
Explanation:that is untrue.
hope my answer helped I tried<3
What is the function of DNA? What does DNA do?
O DNA is used to communicate with neighboring cells.
O DNA allows cells to make glucose from sunlight
O DNA acts as instructions for the cell
o DNA allows cells to make ATP from sunlight
Answers
Answer:
3 - DNA acts as instructions for the cell
Explanation:
DNA is the Bluprint of our cells, every protein necessary for our lives is created using those instructions. every cell of every living creature contains DNA in one form or another.
3. What is it called when layers pile up and press
down on the material below?
a. Compaction
b. Cenentation
c. Layering
d. Stratification
8.
Answers
If a promoter is found within a nucleosome, how would it be possible to express that gene if needed?
A. special proteins would open the promoter while located in a nucleosome
B. it would not be possible to express that gene
C. slide the nucleosome
D. RNA polymerase would start reading from the downstream side of the promoter
Answers
Answer:
A) special proteins would open the promoter while
Explanation:
A promoter is an area of DNA that can be bound to be proteins in order to initiate processes such as transcription. These sequences are usually a repetitive code.
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ILL MARK BRAINLIEST
Which statement describes Earth?
It is an outer planet.
It is a gaseous planet.
It was formed from gas and dust.
It has a thick atmosphere of hydrogen and helium.
Answers
Answer:
the answer is D
Explanation:
:) sorry im a bit late
Work is done when force is applied
a
for a long enough period of time.
b in the opposite direction that the object moves.
in the same direction that the object moves.
two of the above
Answers
Answer:
the answe will be back
Explanation:
I am sorry of it is not right
Describe several adaptations that enable plants to reduce water loss from their leaves. Include both structural and physiological adaptations.
Answers
Answer:
1. Structural adaptations:
- leaves coated in a waxy cuticle
- a fewer number of stomata on the cell surface
2. Physiological adaptations:
- stomatal closure
- osmotic adjustment
Explanation:
In plants, leaves may be covered by a waxy layer to avoid the loss of water vapor (transpiration) through the epidermis. Stomata are small pores localized in the epidermis of leaves and upper organs that control gas exchange, including water vapor. Plants can retain water by having fewer stomata in their leaves, or well by closing stomata during the hot day time and in hydric stress conditions. Finally, osmotic adjustment is an adaptive mechanism caused by the active accumulation of solute in the vacuoles of plant cells (including leaf cells), which is also used by plants to avoid the harmful effects of hydric stress.
The adaptations that enable plants to reduce water loss from their leaves include:
Waxy coatings on their leaves.Some plants have succulent stems.Some plants shed their leaves during summer.Reduced number of stomata.It should be noted that the waxy leaf cuticle is impermeable to water and this stops evaporation. The reduced number of stomata also reduces the transportation rate.
Another adaptation is the leaves that are reduced to spines. This reduces the surface area for transpiration.
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