Answer: Chitin is one of the most important biopolymers in nature. It is mainly produced by fungi, arthropods and nematodes. In insects, it functions as scaffold material, supporting the cuticles of the epidermis and trachea as well as the peritrophic matrices lining the gut epithelium.
other peerson is correct
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:
How did volcanoes change Earth in the first two billion years?
O A. They outgassed water vapor and carbon dioxide into the
atmosphere.
O B. They caused plate movement that arranged the continents we
have today.
O C. They gradually heated the planet.
O D. They created sedimentary rock.
Answer:
The volcanoes provided, on the surface of the earth, the heat, water and the powerful cocktail of organic compounds (hydrogen sulphide, arsenic) that are at the beginning of life. ... The intense performance of CO2 (carbon dioxide) volcanoes allowed the Earth's heat to fix itself permanently in our atmosphere.
Explanation:
The chart below shows data from butterfly populations over a four-year period. Use the data in the chart to answer the question that follows.
Butterfly Color
Year 1
Year 2
Year 3
Year 4
Year 5
Red
100
107
180
192
?
Blue
102
108
33
10
?
White
120
118
175
188
?
Yellow
110
107
39
17
?
Which of the following statements is a valid conclusion based on the data table above?
A.
In year 5, the red population will decrease because a change in the habitat occurred in year three that favored red butterflies.
B.
In year 5, the blue population will decrease because a change in the habitat occurred in year three that favored blue butterflies.
C.
In year 5, the red population will increase because a change in the habitat occurred in year three that favored red butterflies.
D.
In year 5, the blue population will increase because a change in the habitat occurred in year three that favored blue butterflies.
Answer:
red
Explanation:
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
Select the correct answer.
Density is mass divided by volume (d = m ÷ v). Based on the graph, what happens to a fixed mass of water when it is cooled from 4°C to 0°C?
A.
volume increases and density decreases
B.
volume decreases and density increases
C.
volume increases and density increases
D.
volume decreases and density decreases
Answer:
The answer is A, Volume increases and density decreases
Explanation:
When water is cooled from 4°C to 0°C, the volume of water increases and density decreases. Thus, the correct option is A.
What is the Density of water?The density of water may be defined as the weight of the water per unit volume, which depends on the temperature of the water. The normal density of water is 997 kg/m³.
When the temperature of liquid goes down, the density of its gradually decreases, as a result of this, the volume considerably increases.
Therefore, the correct option for this question is A.
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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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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
Within a species of jungle beetles, some beetles are fast-walkers and some are slow-walkers. Some beetles are brown and some are green. Some beetles can fly and some cannot. This species of beetles shows
Answer:
variation
Explanation: I took the test
Answer:
variation
Explanation:
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.
Long chain of _________________ that surrounds the Pacific Ocean.
Answer:
Circum-Pacific belt
Explanation:
it is the belt that goes around the Pacific Ocean longest
Which graphs cannot represent a proportional relationship? Explain how you know.
PLEASE HELP THIS IS DUE AT 11pm
Answer:
B and C
Explanation:
they do not cross (0,0) so they are not proportional
(hope this helps you)
Where is the mRNA made?
Answer: mRNA is made in the nucleus
Explanation:
define a taxon.Give some examples of taxa at different hierarchical levels
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.
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.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.
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
1. Which is an example of the force of gravity?
A. A woman pulls open a door.
B. A magnet pulls an item toward it.
C. A student pushes his chair in at his desk.
D. A rolling ball slows down from friction.
Answer:
D
Explanation:
it is felling down I guess
A lot of the debate around genetically modified organisms is concerned with whether or not it is morally right or wrong to modify the DNA of organisms. What is the name of this issue?
An ethical issue
A philosophical issue
A hypothetical issue
A political issue
Answer:
I believe it is an ethical issue
Describe the two pathways carbon can take after decomposition
Answer:
It either gets released into the air as CO2 or stays in the earth increasing fertility of the soil
Explanation:
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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Why is the temperature in Seattle more stable than Minneapolis, even though they are at similar latitudes
Answer:
minneapolis is probably higher than seattle in sea level
Explanation:
The answer please will give brainliest
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
Which pair is at the same level of structural organization?
A.P and W
B.Q and Z
C.R and Y
D.S and X
Answer:
D. S and X
Explanation:
The pair that is at the same level of structural organization is S and X.
S is the brain of human
X is the leaf of plant.
Both the brain and the leaf are in the organ level of organization. The brain is an organ in human body which carries out most activities in the body. It controls all functions of the body and also interprets information from the outside world. The brain is the seat of intelligence, emotion, creativity and memory.
The leaf in plants is a collection of tissues. It enables photosynthesis to occur. The leaf traps sunlight and carbon dioxide which are used during photosynthesis to manufacture food for plants.
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.
Hope this helps :)
~Blazetoxic123~
4. Describe: Compare the final histogram to the initial histogram. How have the finches been
affected by abundant rain? Describe at least two changes that you notice
Answer:
Finch with shorter beaks increase in number and population of bigger beak finches decreases.
Explanation:
Yes, finches have been greatly affected by abundant rain because in abundant rainfall plants produce an large number and variety of seeds so large amount of food is available for the finches. Due to abundant rainfall, the finches with shorter beaks increase in population. This change greatly helps finches in finding of food so shorter beak finches increase in population due to abundant rainfall.
A gene pool consists of all the genes within a _____.
Answer:
interbreeding population
Explanation:
please give brainlest need 1
what comes next?
Light enters the eye.
Light focuses on the retina.
Answer:
cornea refracts light
not sure
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
Creosote bush's resin is foul smelling that prevents grazing.
O True
O False