Answer:
Coral reef fish are a significant food source for over a billion people worldwide. Many coastal and island communities depend on coral reef fisheries for their economic, social, and cultural benefits. But too much of a good thing can be bad for coral reefs. Download this infographic | Infographic Text
Coral reef ecosystems support important commercial, recreational, and subsistence fishery resources in the U.S and its territories. Fishing also plays a central social and cultural role in many island and coastal communities, where it is often a critical source of food and income.
The impacts from unsustainable fishing on coral reef areas can lead to the depletion of key reef species in many locations. Such losses often have a ripple effect, not just on the coral reef ecosystems themselves, but also on the local economies that depend on them. Additionally, certain types of fishing gear can inflict serious physical damage to coral reefs, seagrass beds, and other important marine habitats.
Coral reef fisheries, though often relatively small in scale, may have disproportionately large impacts on the ecosystem if conducted unsustainably. Rapid human population growth, increased demand, use of more efficient fishery technologies, and inadequate management and enforcement have led to the depletion of key reef species and habitat damage in many locations.
4. Why does sexual reproduction result in offspring with genetic variation? Use the examples that you studied to support your answer.
Answer:
Sexual reproduction results in offsrping with genetic variation due to the multiplication brings about limitless prospects of hereditary variety. The examples, that can be studied to support this would be at the end of the day, sexual generation brings about posterity that are hereditarily extraordinary. They vary from the two guardians and furthermore from one another. This happens for various reasons.
Explanation:
Sexual reproduction results in offspring with genetic variation because it involves the fusion of genetic material from two parent organisms, typically a male and a female.
What is genetic variation?Genetic variation refers to the diversity of genetic traits or characteristics within a population or species.
The process introduces genetic diversity through several mechanisms in
Independent Assortment, Crossing Over, Genetic Recombination,
Mutations.
Overall, sexual reproduction promotes genetic variation by combining genetic material from two parents through mechanisms such as independent assortment, crossing over, genetic recombination, and the introduction of new mutations.
This variation is essential for the survival and adaptation of populations to changing environments and plays a fundamental role in evolution.
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Green seed color (G) is dominant over yellow seed color (g). If two heterozygous parents are crossed, what are the resulting phenotypes expressed as a percent?
A) 50% green, 50% yellow
B) 75% green, 25% yellow
C) 50% GG, 50% gg
D) 25% GG, 50% Gg, 25% gg
E) none of the above
Answer:
B) 75% green, 25% yellow
Explanation:
There are three genotypes made from crossing two heterozygous parents (Gg);
GG
Gg
gg
Crossing two heterozygous parents (Gg) results in 50% Gg, 25% GG and 25% gg. Since green (G) is dominant over yellow (g), there would be a total of 75% green and 25% yellow.
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Select all of the answers that apply.
Chemical weathering occurs by which of the following:
heat
oxidation
hydrolysis
dissolution
water
wind
Solution, carbonation, hydration, oxidation, and reduction are significant chemical weathering reactions, hence options B and C are correct.
What is chemical weathering?Chemical weathering is the term used to explain how chemicals in rainfall alter the minerals in a rock. Rainwater becomes somewhat acidic as a result of the air's carbon dioxide being dissolved in it.
Weathering can result from an interaction between the minerals in the rock and precipitation.
Oxidation, hydrolysis, and carbonation are processes that take place during chemical weathering.
Therefore, hydrolysis is a reaction with water, carbonation is a reaction with CO₂ to generate a carbonate, and oxidation is a reaction with oxygen to form an oxide, hence options B and C are correct.
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What do plants do with light energy during photosynthesis?
Answer:
during photosynthesis light energy is captured and used to covert water, carbon dioxide and minerals into oxygen
Explanation:
Answer:
Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
Explanation:
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1. What characteristic does a lynx, chimpanzee and human have in common?
Answer:
They have four limbs
Explanation:
THey have four limbs
How does an atom become a positive ion?
A- It loses an electron,
B- It gains an electron,
C- It gains a neutron,
D- It loses a neutron
Answer:
A- It loses an electron,
Explanation:
When one or more electrons is knocked off of an atom, it becomes positively charged. It is now an positive ion.
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Introduced in 1963, __________ limits the quantity of air pollution within a given area.
A)
pollution prevention
B)
an environmental management system
C)
zoning
D)
the Clean Air Act
E)
fire ecology
Meningitis may be transmitted from one person to another by:
water
sneeze
cough
soil
Answer:
cough!!!!
Explanation:
How has law enforcement and U.S racially effected black communities.
Explanation:
For example , black people may be arrested more frequently in part because they experience greater poverty.
Many freshwater plants have adapted to low carbon and light levels by adapting what feature?
Group of answer choices
Carnivorous plants
No need for carbon dioxide
Camouflage
Floating leaves
Answer:
The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common. Aquatic plants can only grow in water or in soil that is frequently saturated with water. They are therefore a common component of wetlands.
Humans lived with domesticated dogs over thousands of years which resulted in many breeds of dogs. Humans bred some dogs to have thick
coats to keep the dogs warm in cold climates while other dogs have thin coats that live in warm climates.
Which evidence supports the claim that dogs inherit these characteristics?
O
A. During mitosis, mutations occurred and the offspring's DNA stored this information
B. As dogs digested food, mutations occurred which changed the dog's physical appearance.
O C. Since dogs lived closely in contact with humans, the dog's genetic information remained the same.
D. During meiosis, new combinations of genetic information occurred, and the offspring's genes expressed this information.
Answer:
Did humans tame woolly mammoths or other megafauna?
Considering that some people are gifted with handling animals (e.g. horse whisperers), could paleoindians or other Pleistocene peoples have gained the confidence of woolly mammoths or mastodons to use them as transportation and other tasks, the way that Asian elephants are used today?
Fewer resources would be necessary for a human to travel long distances by riding on the back of a woolly mammoth or paleocamel, as the megafauna could graze and get energy. People may also have traveled by boat during late Pleistocene times (the kelp highway along PNW).
How could we test such a hypothesis? Cave art showing a rider on the back of one of the megafauna? A bridle and/or bit? A talisman worn by a camel is known to have been crafted from a meteorite(1), and so talismans or decorations might have adorned the hypothesized woolly steed. Metal was not a known technology during stone tool usage, as far as we know, though.
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5. the kingdom of prokaryotic unicellular organisms known for living in
environments in which all other organisms are unable to survive in *
Eubacteria
Archaea
Fungi
prokaryote
Answer:
The answer is in the explanation bellow
Explanation:
Archaea. The Archaea Kingdom is a relatively new prokaryotic kingdom, and its organisms differ from the eubacteria because of the environment in which they live.
5
Which two of the following are allotropes of carbon?
w
Buckminsterfullerene
Graphene
Footballene
Steel
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Which of the following are allotropes of carbon?
a) Buckminster Fullerene
b) Graphene
c) Footballene
d) Steel
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The right answer is option a (Buckminster fullerene).
Fullerene is one of the crystalline allotrope of carbon, which was discovered in 1985 collectively by the scientists Richard E. Smalley, Robert F. Curl, Sean O' Brien, James Heath and Harold Kroto. The name 'buckminsterfullerene' was given to the fullerene molecule discovered as a homage to the American architect and scientist Buckminster Fuller.
________________________________
MORE TO KNOW ABOUT FULLERENE:-Properties of fullerenes:
It is found in soot, interstellar dust and in carbon rich rocks.They are bad conductors of electricity.They are magnetic in nature.They are odourless.They can be soluble in solvents like chloroform, benzene or toluene.Uses of fullerenes:
They are used as lubricants.They are used as insulators.Some forms of fullerenes can conduct heat and electricity. So, they are used as superconductors and semiconductors.They are used in the process of drug delivery._________________________________
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When iron in the rock or steel rusts, it’s taking some of the iron and turning it into iron oxide. Bill Nye says it’s ____________________ erosion.
is oxidation reaction
Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.
Explanation:
Which list correctly identifies characteristics that protists share with animals?
• Motile
F
H
• Reproduce
sexually
• Photosynthetic
• Eukaryotic
• Motile
• Reproduce
sexually
• Motile
• Multicellular
• Photosynthetic
G
• Motile
• Prokaryotic
• Multicellular
J
Answer:
H. • Eukaryotic
• Motile
• Reproduce sexually
Explanation:
Hope this helps
The list which correctly identifies characteristics that protists share with
animals include:
Motile Reproduce sexuallyProtists are primarily unicellular organisms and an example is green algae,
amoeba, euglena etc. The animals among them are motile and move from
one place to another in search of food.
They also perform sexual reproduction in which two nuclei fuses together to
form a zygote for fertilization to take place and produce new offspring.
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Why water is a wonder liquid? Justify ( A major resource to determine life on the earth.)
please please guys give me answer of this Question
Answer:
Following are the reasons:Water is a major solvent in nature.Water is a major solvent in nature.Water allows materials to sit upon it for pollen, dust, water insects, and other materials.Water is a major solvent in nature.Water allows materials to sit upon it for pollen, dust, water insects, and other materials.Wate is essential for daily activities and drinking.Water is a major solvent in nature.Water allows materials to sit upon it for pollen, dust, water insects, and other materials.Wate is essential for daily activities and drinking.Most of the chemical reaction is only possible due to water.Water is a major solvent in nature.Water allows materials to sit upon it for pollen, dust, water insects, and other materials.Wate is essential for daily activities and drinking.Most of the chemical reaction is only possible due to water.Living organism animals, plants, microorganisms, human beings mainly contain water that makes life possible on the earth.Water is a major solvent in nature.Water allows materials to sit upon it for pollen, dust, water insects, and other materials.Wate is essential for daily activities and drinking.Most of the chemical reaction is only possible due to water.Living organism animals, plants, microorganisms, human beings mainly contain water that makes life possible on the earth.Environment temperature, rainfall etc are maintained by water.Water is a major solvent in nature.Water allows materials to sit upon it for pollen, dust, water insects, and other materials.Wate is essential for daily activities and drinking.Most of the chemical reaction is only possible due to water.Living organism animals, plants, microorganisms, human beings mainly contain water that makes life possible on the earth.Environment temperature, rainfall etc are maintained by water.There are much more other properties which make water as a wonderful liquid.Which of the following statements are true regarding cellular reproduction? Select all that apply.
When an organism grows, cellular reproduction creates new cells.
Organisms reproduce, so new cells are needed.
If cells become damaged, cellular reproduction can repair damaged cells.
Cellular reproduction helps organisms acquire water better, as there are more cells present.
Cellular reproduction is the exchange of homologous chromosome segments.
Answer: Replacing dead cells
what disease that cause the cell membrane to break
Answer:
Cystic fibrosis
Explanation:
cystic fibrosis is caused by a mutation i.e the cell membrane starts to separate
what is the importance of the sense of smell when we are in the science loboratory
Answer:
because some chemical reactions release gases which may be odourless or may have smell, in order to identify it it is necessary to have a good sense of smell.
Long chain of _________________ that surrounds the Pacific Ocean.
Answer:
Circum-Pacific belt
Explanation:
it is the belt that goes around the Pacific Ocean longest
The increase in potency of a substance that results from travel through the food chain is called __________.
A)
heredity
B)
dose response
C)
gene-environment interaction
D)
biomagnification
E)
physiology
Answer: (is D Biomagnification)
Explanation: coz it just is
How do humans affect the carbon cycle?
Using pencil to write,exhaling carbon dioxide, wearing sunscreen or inhaling oxygen?
NEED HELP ASAP
Answer:
both
Explanation:
it a affects the carbon cycle both ways
when a plant is in area of light, which of the following will happen?
Answer:
Your answer is B
Explanation:
Plants need light in order to survive. Natural sunlight allows plants to grow leaves, flower, produce chlorophyll, and more.
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Answer:
B. The plant will slowly die because it cannot photosynthesize.
Explanation:
Because when they don't have light, they can't get the nutrients from the light they need to survive.
Describe the responses of a red blood cell in isotonic, hypertonic and hypotonic
solutions.
Answer:
Isotonic: Isotonic solutions are solutions having equal osmotic pressures. Hypotonic: Hypotonic solutions are solutions having lower osmotic pressures. Hypertonic: Hypertonic solutions are solutions having comparatively higher osmotic pressures.
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Answer:
true
Explanation:
Answer:
false
Explanation:
as you go deeper into the earth's crust the core gets hotter due to magma underneath it, the pressure also increases
what are the different cellular organelles
Answer:
Plasma membrane, nucleus, ribosomes, mitochondria
Explanation:
If 70% of the alleles in a gene pool of a population are dominant, the frequency of the
Answer:
Explanation:
The number of copies of an allele in a population divided by the total number of all alleles for that gene in a population is the allele frequency. For a gene with two alleles whose frequencies are p and q, the Hardy-Weinberg equation states that the genotypes that are possible for the population are p^2 + 2pq + q^2, which is equal to
Long chain of _________________ that surrounds the Pacific Ocean.
Answer:
The Ring of Fire or also known as the Circum-Pacific Belt
Hope that helps!
Answer:
Circum-Pacific Belt
Hope it helps
Which stage of mitosis occurs the most often and why?
Answer:
prophase
Explanation:
...................
The answer is prophase because of how long it takes to separate the chromatin, connect spindles, and gathering resources to prepare for the rest of the phases! Good luck!! <3
A
boundary is a place where two tectonic plates move away from each other.
transform
continental
O divergent
convergent
Answer: Divergent boundary
Explanation: Good luck! :D