Answer:
because populations can survive in a variety of different situations
because the environment is constantly changing and different alleles are favored in different situations
Explanation:
Daphnia longicephala is a freshwater crustacean that can detect chemical cues produced by the predator Notonecta glauca. Researchers raised Daphnia clones and observed that those exposed to Notonecta chemical cues during their development produced larger protective crests. Crest height and width are measured as ratios to body length. The increase in the size of the crest width and height is not associated with a corresponding change to the Daphnia’s genome. Researchers hypothesize that growing a crest is energetically costly, so Daphnia does not develop the large crests in the absence of Notonecta.
b. Explain how the presence of Notonecta chemical cues affects gene expression in the Daphnia.
Answer:
Crustacean Daphnia longicephala lives in freshwater that can detect chemical cues produced by the predator Notonecta glauca and in response of these chemicals the Daphnia produces crest for defense purpose.
Explanation:
Notonecta glauca is a predator which feeds on Daphnia longicephala. For protection from predator Daphnia produces crest which is a defense mechanism in the Daphnia against Notonecta. This defense is associated with the chemical produces by Notonecta . So we can say that the chemical is responsible for the formation in crest in Daphnia which does not formed in normal condition.
in the space below, write the equation of probability ( Fundamentals of Genetics )
Answer:
Can you give me some more information?
1. Biotic factors like wolves can have an effect on abiotic factors like rivers.
True or False
2. Energy can not be transferred from one trophic level to the next.
True or False
3. Extirpation is when a species disappears from a part of its range.
True or false
Answer:
1. True
Biotic factors can have effect on abiotic factors like water by the way they use it and how much they drink. If biotic factors drink too much water in a rivver then it could end up with limited amount of water for the ecosystem.
2. False
On average, about 50 percent of energy available within one trophic level is transferred to the next trophic level.
3. True
Extirpation is extinction of a species in a given area.
I NEED HELP PLEASE Which is a correct interpretation of this cladogram?
A. Kangaroos reproduce using placenta
B. Salmon evolved before kangaroos
C. Lizards do not have jaws
D. Earthworms are unicellar
Answer:
B. Salmon evolved before kangaroos.
Explanation:
This is the correct interpretation of this cladogram
Plz help
Which of the following substances is most likely to be soluble in water?
A. a polar substance capable of forming hydrogen bonds
B. a molecule with hydrophilic heads and hydrophobic tails
C. a hydrophobic substance
D. a nonpolar substance
Which of the following planets experiences the strongest gravitational pull from the sun compared to the others?
The planet that experiences the strongest gravitational pull from the sun is Mercury, because it is the closest planet to the sun.
Explanation:In terms of gravitational pull from the sun, the strength is determined by two factors: Mass and Distance. Considering our solar system, the planets closer to the sun experience a stronger gravitational pull due to their proximity. Among all the planets, Mercury, being the closest planet to the sun, experiences the strongest gravitational pull.
Learn more about Gravitational Pull here:https://brainly.com/question/35880093
#SPJ2
The body can be invaded by , which are harmful microorganisms that cause diseases. The body then initiates a(n) response, which may involve redness, swelling, and fever.
Answer:
Pathogens, inflammatory
Explanation:
Pathogens are defined as disease causing microorganisms and the inflammatory response involves redness, swelling, and sometimes fever.
Hope that was helpful!
The body can be invaded by pathogens, which are harmful microorganisms such as bacteria, viruses, fungi, and parasites that cause diseases.
What is immune response?When pathogens enter the body, the immune system initiates a response to fight them off. This response is called the immune response, and it involves a complex network of cells, tissues, and organs that work together to recognize and eliminate pathogens.
The immune response may involve a range of symptoms, such as redness, swelling, fever, and pain, as the body attempts to neutralize and remove the invading pathogens.
In some cases, the immune response can cause symptoms such as redness, swelling, fever, and pain, as the body attempts to neutralize and remove the invading pathogens.
These symptoms are typically a sign that the immune system is working to fight off the infection. However, in some cases, the immune response can also cause damage to healthy tissues and organs, leading to more severe symptoms and complications.
The body's immune response is a complex and highly coordinated system that is essential for protecting us from harmful pathogens. However, it is important to maintain a healthy lifestyle, such as through proper nutrition, regular exercise, and good hygiene practices, to support the immune system and minimize the risk of infections.
Learn more about microorganisms at:
https://brainly.com/question/6699104
#SPJ3
Calculate the percent increase in population between year 1 and year 2, year 2 and year 3, and year 3 and year 4. Round
up or down to the nearest whole percentage. Show your work
Answer:
PLATO
Percent increase between years 1 and 2:
(5,780 – 3,845) ÷ 3,845 = 0.50 = 50% increase
Percent increase between years 2 and 3:
(15,804 – 5,780) ÷ 5,780 = 1.73 = 173% increase
Percent increase between years 3 and 4:
(52,350 – 15,804) ÷ 15,804 = 2.31 = 231% increase
Answer:
Submitted!
Hide Sample Answer
Percent increase between years 1 and 2:
(5,780 – 3,845) ÷ 3,845 = 0.50 = 50% increase
Percent increase between years 2 and 3:
(15,804 – 5,780) ÷ 5,780 = 1.73 = 173% increase
Percent increase between years 3 and 4:
(52,350 – 15,804) ÷ 15,804 = 2.31 = 231% increase
Explanation:
Which two body systems allow humans to carry out the same life process as the ameba in the diagram
Answer:
The best answer would be C.
Explanation:
The body systems allow humans to carry out the same life process as the ameba in the diagram is digestive and circulatory system.
What are body systems?Body systems refers to various systems that comprises of organs,cells or toddies which help to carry out or perform.specufic tasks in the body for the sustainable of a person. Examples of body systems include digestive, circulatory,nervous, respiratory, excretory, immune system and so on.
Therefore, The body systems allow humans to carry out the same life process as the ameba in the diagram is digestive and circulatory system.
Learn more about body systems below.
https://brainly.com/question/342055
#SPJ2
(PLEASE HELP) Which of the following best describes the process of ecological
succession?
A)The natural cycle of carbon being exchanged between producers and consumers
B)Ecosystems being consistently altered by a number of natural disasters
C)Energy flowing through organisms in complex food webs
D)Communities replacing each other until a stable community is formed
Answer: try d
I think it’s d because ecological succession
Is the process in which an environment changes or develops overtime
Consider the following food chain:
grass → grasshopper → mouse → snake → hawk.
What percentage of the chemical energy
fixed by photosynthesis of the grass
(100%) is available to the hawk?
01%
1%
1%
10%
Answer:
0.01%
Explanation:
If the grass is 100%, then the grasshopper is 10%, the mouse is 1%, the snake is 0.1%, and the hawk is 0.01%. When you go up the trophic levels, you only get 10% of the energy left behind from the last level (in other words, you move the decimal point to the left by 1 place).
The food chain shows the percentage of energy that is available to the hawk which is in the form of 0.1% i.e option A is correct.
What is a food chain?The food chain is the web of food that flows a sequence of decreases of energy from the source and the law of energy follows the 10% law as for each and every stage of the ecological system there is drop of 10% energy used by the organisms.
The available energy at the bottom of the food chain is 100% which decreases to 10% in grasshopper is the primary consumer, this energy further decreases to 1% in secondary and tertiary consumers, and finally less than 1% is available for the hawk.
Find out more information about the food chain.
brainly.com/question/2179
× + 9≥11
helpppppppp
Answer:
x ≥ 2
Explanation:
x + 9 ≥ 11
subtract 9 from both sides
x ≥ 2
Answer:
BELOW
Explanation:
Step 1: Transport the number to other sid and reverse their sign
Step 2: Enter the numbers with their signs in calculator to calculation then
3. Write the final answer and done.
Here:
1. × + 9≥11
2. × ≥11-9
3. × ≥2
Hope that help you ^-^
Which is the change in size of a group of organisms of the same species over time?
population growth
death rate
birth rate
immigration and emigration
Answer:
population growth
Explanation:
Answer:
Population Growth.
Explanation:
:)
In a laboratory experiment the time it takes a marble to fall from a table to the floor is recorded with a stopwatch. The results are 0.38 seconds, 0.37 seconds and 0.39 seconds respectively. Most students in the lab believe that these times are statistically the same, within experimental error. What would be a good method to confirm the results?
A) Change the height of the table and repeat the experiment.
B) Repeat the experiment from a much higher table.
C) Repeat the experiment from a lower table.
D) Do multiple trials at the same height.
Answer:D) Do multiple trials at the same heigh
Explanation: The guy claiming to have a big brain has lost their braincells.
Answer:
I got it right
Explanation:
In USA test prep
In snapdragon flowers petal coloration is incompletely dominant with petals either being red,
white, or pink. If two plants are bred creating several hundred offspring all of which are pink
what would be the most likely phenotypes of the parent plants?
Answer:
One parent will be red (RR) and the other will be white (rr)
Explanation:
Incomplete dominance is a genetic scenario whereby one allele of a gene is not completely dominant over the other, hence, both alleles form an hybrid that has a different phenotype from both parents. In this case, it involves a gene coding for flower colour in snapdragon plants.
Allele for red color (R) is incompletely dominant over the allele for white color (r). Hence both alleles form an heterozygous (Rr) pink phenotype (pink) that is a blending of both parents phenotype. A red flower color will be produced when the plant is homozygous for the red allele (RR) while the white flower colour will be phenotypically expressed when the plant is homozygous for the white allele (rr).
In this case where two parents where crossed to produce several hundreds of offsprings that exhibited the pink color (hybrid, Rr). This means that the parents were most likely red (RR) and white (rr).
That is, RR × rr ------- All Rr
Incomplete dominance occurs when when both the alleles of a gene are partially expressed and resulting in an intermediate or a completely different phenotype.
If two plants are bred creating several hundred offspring all of which are pink in an incomplete dominance cross, the likely phenotype of their parents would be red phenotype and white phenotype.The parents would most likely have a red phenotype and white phenotype in which none of the two is dominant over the other leading to a partial/ incomplete expression in the offspringLearn more: https://brainly.com/question/13612556
Why are viruses considered to be nonliving?
Answer:
Viruses are considered to be nonliving because, they can reproduced only in the host cell.
Explanation:
Viruses considered to be nonliving because they can reproduce only in host cell . Correct Option is 4.
Viruses are often considered non-living entities because they lack the essential characteristics associated with life. While viruses are capable of infecting and replicating within host cells, they are unable to carry out key life processes on their own.
One of the defining features of living organisms is the ability to grow and reproduce. Viruses depend entirely on host cells to replicate and multiply. They cannot reproduce independently or carry out metabolic activities like respiration or digestion. Instead, viruses inject their genetic material (DNA or RNA) into a host cell, hijacking the cellular machinery to replicate their genetic material and assemble new virus particles.
Try to know more about Viruses :
https://brainly.com/question/33604609
#SPJ2
How many different nitrogenous bases do you see?
Answer:
There are four different nitrogenous bases.
Explanation:
These four include adenosine, thymine, cytosine, and guanine for DNA. Hope this helped :)
There are four different nitrogenous bases. These four include adenosine, thymine, cytosine, and guanine for DNA.
What is the explanation for this?The explanation for the presence of four different nitrogenous bases in DNA is due to the specific pairing rules that govern the structure of DNA.
Adenosine pairs with thymine (A-T) and cytosine pairs with guanine (C-G) through hydrogen bonding. These base pairs form the rungs of the DNA double helix.
The pairing is highly specific, with adenosine always pairing with thymine and cytosine always pairing with guanine. This complementary base pairing allows DNA to replicate accurately and carry genetic information.
Learn more about nitrogenous bases at:
https://brainly.com/question/1380409
#SPJ6
Sinead drew a Venn diagram to compare sponges and cnidarians.
Which label belongs in the area marked W?
Are always sessile as adults
Live in salt water
Have stinging cells
Reproduce sexually only
Answer:
A. Are always sessile as adults
Explanation:
Cnidarians are mobile creatures when adults, but sponges never figure out how to move.
Hope this helps!
Professor Tan studies water quality in streams near chemical plants. Which is a type of qualitative data that Professor Tan
should record during these studies?
the pH of the water
O any occurrences of unusual odors
O the oxygen concentration of the water
any changes in sizes of fish population
The occurrences of unusual odors in the water is considered as qualitative data in Professor Tan's studies. This is because such observations describe a quality of the water, not a quantity or measurable characteristic.
Explanation:Qualitative data refers to non-numerical information. While studying the quality of water near chemical plants, Professor Tan might record several types of data. However, among the options presented, any occurrences of unusual odors in the water would be classified as qualitative data.
Indeed, experiences of our five senses like smell, color, and taste can be considered qualitative because they describe the quality of something rather than a quantity. So, in the case of Professor Tan's studies, if he noticed a strange smell in the water and recorded this observation, that would be classified as qualitative data.
Learn more about Qualitative data here:https://brainly.com/question/36331002
#SPJ3
True or False: Grizzly Bears and Polar Bears are the same species.
Answer:
True
Both polar bears and grizzly bears are genetically same species—DNA proves it. They diverged from one another about 400,000 years ago. Even today in
7. If stimulant drugs increase the rate that neurons fire (neurotransmission), what do you
think depressants will do? Explain your answer
Answer:
Depressants inhibit neurons from sending impulses by binding to receptor molecules. This means that they decrease the rate that neurons fire. They give a drowsy/calming effect.
Hope this helped and pls mark as brainliest!
~Luna
which fossil would most likely be found in the oldest rock layer?
A) flying dinosaur
B) mastodon
C) trilobite
D) saber-tooth cat
Answer:
C
Explanation:
Trilobites were alive the longest time ago, so they would be found in the oldest rock layer.
Which best compares habitat and a niche?
Answer:B habitat is a place in Which organisms live, and niche is the way in which an organism fits into its habitat
Explanation:
Which diagrams illustrate analogous
structures?
1
2.
Answer:
I believe the bat and insect wings are analogus structures. Answer is 1 and 2.
Explanation:
Bat wings and human arms come from similar ancestry.
why do elephants trow dust/ kick dust?
Answer:
Elephants use dirt as sunscreen, to counteract the damaging rays of the sun, elephants throw sand on themselves. Adult elephants will also douse youngsters with dust. When coming out of a bath in a river, elephants will often throw mud on themselves as a layer of protection.
Explanation:
What is the net ATP production at this stage of cellular respiration?
2 ATP
4 ATP
32 ATP
36 ATP
Answer:
2 ATP
Explanation:
Answer: its 2 ATP
Explanation:
Which energy transformations are happening in this image?
radiant to electrical to thermal
thermal to electrical to radiant
electrical to radiant to thermal
electrical to thermal to radiant
Answer: Electrical -> Radiant Energy -> thermal Energy
Explanation:
Electrical energy is transferred from the electrical outlet to the microwave. Radiant energy is transformed into thermal energy as the popcorn kernels absorb the microwaves (Radiant Energy). This causes the kernels to become hot and pop (Thermal energy).
Hope this helps!
Whales have what seem like remnants of a pelvis and femur, as shown here.
What are these structures an example of?
transitional structures
analogous structures
vestigial structures
adapted structures
Answer:
vestigial structures
Explanation:
A "vestigial structure" or "vestigial organ" is an anatomical feature or behavior that no longer seems to have a purpose in the current form of an organism of the given species. Often, these vestigial structures were organs that performed some important functions in the organism at one point in the past.
Answer:
vestigial structures
Explanation:
Given below is a map of the west coast of the United States. The red line depicts the San Andreas Fault, a transform boundary that runs parallel to the coast. The San Andreas Fault separates the North American plate on the east from the Pacific plate on the west.
Based on this information, which of the following most likely occurs near the San Andreas Fault?
A.
frequent earthquakes
B.
frequent droughts
C.
subduction of oceanic crust
D.
deposition of sediment
Answer:A . Frequent earthquakes
Explanation:
When a predator catches its prey, it may appear that the prey species suffers. But there are benefits to this type of interaction for prey species as well. What are two way in which the prey species might benefit from the predator hunting them?
Final answer:
Predation can benefit the prey species by maintaining sustainable population levels and promoting genetic fitness through natural selection, leading to advantageous adaptations like camouflage.
Explanation:
When a predator catches its prey, it may seem detrimental to the prey species at first glance. However, there are benefits to the prey species from the act of predation. One benefit is that predation can help maintain the prey population at a sustainable level, preventing overpopulation and the resulting resource depletion that would impact future generations. Another benefit is related to natural selection; the predation pressure can lead to an increase in the genetic fitness of the prey population by disproportionately removing individuals that are less adept at avoiding predators. This can lead to the development of advantageous adaptations like camouflage or mimicry to better evade future predation. Predation is a complex interaction that plays a significant role in the evolutionary and ecological processes that shape life in ecosystems.