Answers
Hope this helps
Related Questions
PLEASE HELP ME
The greater the biodiversity in an ecosystem the
A. less likely the ecosystem is to survive
B. more likely the ecosystem will survive
C. less valuable it is to human, for various products
D. the more similar it is
Answers
Answer:
I am pretty sure the answer is B
- I'm sorry of its not correct
A ray of light is passing through a medium making an angle of 45°. If the
refractive index of the medium is 1.4, calculate the angle of refraction. [Ans: 30°)
Answers
Answer: By Snell's law, we can see that the angle of refraction is 30.34°
Explanation:
Snell's law says that:
If a ray in a medium of refractive index n₁, insides with an angle θ₁ in another medium with refractive index n₂, then the angle of refraction θ₂ is given by:
n₁*sin(θ₁) = n₂*sin(θ₂)
We know that:
The incidence angle is 45°, then: θ₁ = 45°
We can assume that the first medium is air, then n₁ = 1
The refractive index of the other medium is 1.4, then n₂ = 1.4
Replacing these in the Snell's law equation we get:
1*sin(45°) = 1.4*sin(θ₂)
Now we can solve this for the angle of refraction:
sin(45°)/1.4 = sin(θ₂)
Asin(sin(45°)/1.4 ) = Asin( sin(θ₂)) = θ₂ = 30.34°
So the angle of refraction is 30.34°
Give an example of central heating and of local heating.
Answers
Answer:
A central heating system provides warmth to the whole interior of a building from one point to ... Institutional heating systems (office buildings or schools, for example) can use low-grade, inexpensive
An alternative to district heating would be to build a small district heating plant together with your neighbours, which is known as local heating or joint heating. ... The local heating system also includes a network of pipes and a common boiler plant that delivers heat through the pipework to the single-family houses.
Explanation:
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CAN SOMEONE PLZ HELP
1. List five organelles eukaryotes have that prokaryotes do not have.
2. Explain how the following organelles ensure that a cell has the proteins it needs: nucleus, rough ER, vesicles,
and Golgi apparatus.
3. What is the main difference between rough endoplasmic reticulum and smooth endoplasmic reticulum?
4. Describe the three types of vesicles.
Answers
Answer: 1 Lysosomes and peroxisomes, Microtubules, Endoplasmic reticulum, Mitochondria
2 The role of the nucleus of a eukaryotic cell is to control the cell. Because it contains most of the cell's DNA, which is encoded with genetic instructions, the nucleus controls which proteins the cell makes.
3 The rough endoplasmic reticulum has ribosomes on its surface. This is what give the RER a "rough" appearance. The smooth endoplasmic reticulum (SER) does not contain ribosomes. The Smooth ER looks more like tubes. The SER helps in the storage of proteins and lipids.
4 Secretory vesicles contain materials that are to be excreted from the cell, such as wastes or hormones.
Transport vesicles move molecules within the cells.
Vacuoles are vesicles that contain mostly water.
hope this helps
Answer:
sheeeeeeeeesh I agree with the other person
have a good day :)
Explanation:
a student models moon phase she holds a foam ball on a stick in front of her body and stands in front of the light as shown. the student uses herself to represents earth. she turns her body slowly to phases.
Answers
Answer:
D- Diagram 4
the full moon is represented in diagram four.
vitamin(a) retinol function on the body
Answers
Answer: Function. Vitamin A helps form and maintain healthy teeth, skeletal and soft tissue, mucus membranes, and skin. It is also known as retinol because it produces the pigments in the retina of the eye. Vitamin A promotes good eyesight, especially in low light. Vitamin A (retinol) is ingested as either retinyl esters or carotenoids and metabolized to active compounds such as 11-cis-retinal, which is important for vision, and all-trans-retinoic acid, which is the primary mediator of biological actions of vitamin A
Explanation:
Each different section of the chromosome represents a _____
*wasnt given any answers
Answers
Explain the unique information trace fossils and coprolites can help scientists infer about an organism
Answers
They're trace fossils, not animal bodies. This coprolite can reveal an animal's diet. Scientists can determine what animal dropped coprolites based on its shape, size, and location.
What are coprolites?Fossilized feces are known as coprolites. Because coprolites provide information for the animal's behavior rather than its shape, rather than being considered body fossils, they are instead categorized as trace fossils.
A coprolite can provide researchers with information about an animal's nutrition. Scientists are able to determine the species of animal that may have been responsible for the droppings by analyzing the shape and size of the coprolites as well as the location where they were discovered.
Because coprolites have a propensity to deteriorate so quickly, we only find them very infrequently. They are the marine species that are found the most frequently. The presence of coprolites in fish and reptiles is very common.
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In the 1970s, the pesticide DDT was used to kill insects that damaged fruit and vegetable crops. Most insects died from being exposed to DDT, but some survived. These surviving insects contributed to an increase in their population by
Answers
Answer:
gaining modification in their Gene's which helped them to resist that particular pesticide
These surviving insects contributed to an increase in their population by passing genes for DDT resistance to the next generation.
What is a resistance gene?In order to survive, bacteria can create mechanisms known as resistance against antibiotics and antifungals. The germ's resistance mechanisms are determined by the specific proteins that DNA instructs the germ to produce. Many different forms of resistance genes can be found in bacteria and fungi.
Once a bacteria have acquired a resistance gene and incorporated it into its DNA, the bacterium can dominate other bacteria and convey the resistance gene to all of its offspring. Bacteria reproduce quickly, which amplifies resistance.
Hence, These surviving insects contributed to an increase in their population by passing genes for DDT resistance to the next generation.
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A large industrial company manufactures paper products such as paper towels and napkins using wood pulp. Which of these BEST describes why wood is considered to be a 'renewable' resource?
Answers
Answer: The question is incomplete because the options were not given but the options has been gotten from another website.
Here are the options.
a. Wood is routinely recycled to make new wood-based products.
b. Wood products can be manufactured from different tree species.
Eliminate
c. Wood may be replenished by planting new trees to replace those being used.
d. Wood products can be manufactured using various other materials such as plastics.
The correct option is c.
Wood may be replenished by planting new trees to replace those being used.
Explanation:
This is because wood is a Renewable resource because Renewable resources are resources that can be replenish or reproduce again after usage either by naturally producing another one. Theses resources are not exhausted because they can naturally be reproduce again. Wood is a Renewable resources because new ones are planted to replaced the used ones.
I will mark someone brainliest! Please help!!
Answers
Answer:
The first one
Explanation:
Mark me brainliest please
What is a eukaryote?
Question 2 options:
organism that does not have a nucleus
organism that does have a nucleus
organism that produces its own food
Answers
Answer:
an organism that has a nucleus
Explanation:
What is a eukaryote?
1 organism that does not have a nucleus
2 organism that does have a nucleus<<
3 organism that produces its own food
4 organism that is ancient
HELP ASAP I AM SO STUCKKKK!!!!!!!!!!!!!!!!!!!!!
In recent decades, extinction rates have been significantly lower than normal.
-true
-false
Answers
more and more mammals are becoming extinct , and that’s probably due to humans actions
Answer:
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The discovery that chromosomes are involved in inheritance was made possible by the invention of the -
O a. computer
O b. microscope
Oc microgram scale
O d. mercury thermometer
Answers
What is the possible effect of high nutrient levels
In water systems
Answers
Answer:
D. Healthier Fish
Explanation:
What happens if the mRNA strand is not transcribed properly?
Answers
HELP PLS
Ticks are parasitic insects that feed on blood. Consider a single
population of ticks that divides into two populations. One population
feeds on the blood of mammals that live only in trees. The other
population feeds on the blood of mammals that live only on the ground.
Which observation supports the idea that speciation has occurred?
How Fa
Search fc
The tree population and the ground population of ticks cannot mate
and have offspring.
How mar
Which an
The tree population of ticks feeds more frequently than does the
ground population
Do wild re
What doe
The genes in both the tree population and the ground population of
ticks combine to form a single, large gene pool.
What doe
The ground population of ticks gets eaten less frequently by birds
than the tree population.
Answers
Answer:
ask siri 123
Explanation:
i can help
The tree population and the ground population of ticks cannot mate and have offspring indicates speciation has occurred.
What is population?"A population is defined as a group of individuals of the same species living and interbreeding within a given area."What is speciation?"Speciation is the evolutionary process by which populations evolve to become distinct species."The ticks of tree and ground population evolve without interfering with one other. Forms a different species and no mating occurs between them.Hence, the correct answer is: The tree population and the ground population of ticks cannot mate and have offspring.
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______ contains many wavelengths and is similar to sunlight at noon on a bright day.
A. Ultraviolet
B. White light
C. infrared
D. Visible light
Answers
Answer:
It should be D.
Explanation:
I hope this helps
Kingdom protista contains organisms that do not fit into other Eukarya Kingdom. Explain 3 ways that protists are different from animals, plants and fungi.
Answers
Explanation:
Protists are eukaryotes, and most are single-celled. You can think about protists as all eukaryotic organisms that are neither animals, nor plants, nor fungi.
protists is a paraphyletic name for unicellular Eukaryota organisms.
Which statement accurately describes recent population density and shifts in Southeast Asia?
Rural towns have many of the same opportunities as urban centers
Indonesia’s capital of Jakarta has become a megalopolis.
The population is rapidly declining
Overcrowding has pushed many people to migrate from urban to rural areas.
Answers
Answer:
Indonesia's capital of Jakarta has become a megalopolis.
Explanation:
I took the test
Answer:
Many city people are very poor and live in urban slums.
The greatest population densities are on the coasts, along the rivers, and in deltas.
Indonesia’s capital of Jakarta has become a megalopolis.
Explanation:
just did the quiz
HELP MEEE,!!!!! PLEASE
Answers
Answer:
C
Explanation:
spindle fibers are important during metaphase. division stops without them.
Which of the following is not a principle of natural selection?
Answers
Answer: The last one on the bottom i'm in biology
The statement which is not a principle of natural selection is, in every population, adaptations allow some organisms to survive and reproduce better than others. So, the correct option is D.
What do you mean by Natural selection?Natural selection is the process through which populations of living organisms adapt and change their needs as per nature.
The given statement gives the idea of adaptation rather than natural selection. Natural selection gives the idea of competing for limited resources. Natural selection always leads to the most favorable types of variation that an individual possess.
Therefore, the statement which is not a principle of natural selection is, in every population, adaptations allow some organisms to survive and reproduce better than others.
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What is the trophic level of the Aoudad (primary, secondary, tertiary consumer, scavenger, decomposer) .
PLEASE ANSWER ASAP!!!!
Answers
Answer:
Primary.
Explanation:
The Aoudad (Barbary sheep) Eat producers, (autotrophs) making them primary consumers
What is the genotype ratio?
Answers
Answer:
The genotypic ratio shows the number of times a characteristic of an organism will be seen in the offspring when genes for certain traits are crossed.
Explanation: hope this helps :p
What does it mean when we say that DNA replication is semiconservative ?
Answers
Answer:
Basically, when people say that DNA replication is semi-conservative they are saying that two identical copies are being made from the original DNA strand.
Explanation:
The two new strands contain one side of the original DNA and another side of synthesized pair.
Which of the following statements is true about mutations?
A. It is a source of genetic variation
B. Rates tend to be very high in most populations.
C. It is generally lethal
D.It affects only somatic cells
Answers
Answer:
A. It is a source of genetic variation
Why are sex-linked traits like hemophilia less common in females than males?
A. Females would need to inherit two X chromosomes containing the recessive trait.
B. Females would need to inherit one X chromosome containing the recessive trait.
C. Females would need to inherit one Y chromosome containing the recessive trait.
D. Females would need to inherit two Y chromosomes containing the recessive trait.
Answers
Answer:
A. Females would need to inherit two X chromosomes containing the recessive trait.
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Peter is complaining of stomach pain and constant hunger. Peter’s doctor diagnoses him with a worm infection. Peter feels hungry because the worm is absorbing food from his intestines.
Peter most likely has an infection from a(n)
tapeworm.
leech.
planarian.
marine worm.
Answers
Answer:
A) Tapeworm
Explanation:
got it right on edge nuity
Peter is complaining of stomach pain and constant hunger as he was diagnosed with a worm infection.
Peter feels hungry because the tapeworm is absorbing food from his intestine as tapeworm begins to feed off your body's nutrients to grow once it invades the body.How tapeworm infection occurs?Tapeworm infection is caused by ingesting food or water contaminated with tapeworm eggs or larvae.When tapeworm hatches and attaches itself to your intestine, it starts feeding off body's nutrients causing increase in apatite (hunger increases).It grows by reproducing proglottids ( chain looking body part) and the cycle continues.Planaria upon causing infection feeds on blood cells hence can not cause apatite.Leech and marine worm can not invade the body like tapeworm and planaria.To learn more about tapeworm infections:
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How does gene flow directly contribute to evolution?
Answers
Answer:
Evolution can also occur as a result of genes being transferred from one population to another. This gene flow occurs when there is migration. The loss or addition of people can easily change gene pool frequencies even if there are no other evolutionary mechanisms operating.
Explanation:
hope this helps!!!
2) If the foliation on a rock is running north-south what direction is the tectonic pressure coming from?
Answers
Answer:
if the foliation on a rock is running north-south, the pressure might be vertical (for instance, up to down)
Explanation:
The pressure is the second most principal factor that influences metamorphic rocks. It originates from the weight of the own materials, their densities, and the deepness.
Litostatic pressure originates from the weight of materials in the interior of the crust.
Pressure generates alignment of materials (foliation and schistosity) and mineral rotation.
There are different types of metamorphism.
Dynamic metamorphism is the one where pressure is the principal factor. It generates by tectonic conditions, and it presents mainly in failure or fracture areas. It provokes trituration and recrystallization of minerals.
Classification of the metamorphic rocks according to their structure:
GranulationRecrystallizationMetasomatismMassiveFoliationFoliation refers to dynamic metamorphism, where pressures act and minerals orientate perpendicular to the pressure direction.
According to this concept, if the foliation on a rock is running north-south, the pressure might be vertical (for instance, up to down) while minerals' weight helping in the process of foliation.
If the foliation on a rock is running north-south, the tectonic pressure is coming from a vertical direction.
What is a foliation?Foliation on a rock means continuous multi layering on a metamorphic rock.
These layers can be thin as a sheet of paper.
Foliation occurs when the plain or elongated minerals inside a rock are pressed together and aligned.
Thus, If the foliation on a rock is running north-south, the tectonic pressure is coming from a vertical direction.
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