Answer:
b) At equilibrium, the species composition of an island will not change
Explanation:
According to MacArthur-Wilson (1967) equilibrium theory of island biogeography
• The number of species on an island represents a dynamic equilibrium between the opposite forces of immigration and extinction rates.
• At equilibrium, the species richness keeps constant. But the species composition changes.
• Each island can have a certain number of species, but these species are not always the same, meaning that species might renew. Interspecific competition has a significant role.
The assumptions of the equilibrium theory:
The immigration rate depends on the distance of the island to the mainlandThe extinction rate depends on the island size.All the species have the same chances of getting to the island.Predictions:
At equilibrium, the number of species is constant in time.Dynamic equilibrium means a continuous species renewal. If the island gets bigger, species richness increases. If the island is closer to the mainland, species richness increases.The model has been criticized for its predictions and assumptions. What actually happens in nature might differ from the assumptions.
Target effect: The immigration rate not only depends on the distance of the island to the continent but also on the size of the island. Bigger islands are easier to see than smaller islands. Rescue effect: The Extinction rate not only depends on the size of the island but also the distance. Closer islands have higher chances of being colonized than the farther ones. Not all species have the same chances of getting to the islands because species vary in their dispersion capabilities. The theory does not consider in situ evolution.However, despite the critics, the theory has significant contributions:
It is a simple model that helps to define and interpret predictive models. It considers competition and competitive exclusion → As the number of species increases, the extinction rate increases too. It applies to different habitats such as patches, corridors, natural reserves, among other island-like areas. Useful for interaction and trophic webs conservationThe theory of island biogeography does state that a larger island will tend to have a greater number of species when compared to a smaller island.
An island is regarded as an ecosystem that is uniquely different from the surrounding area.
It is also stated that when immigration rates and extinction rates are at the same point or the same, the island is in an equilibrium state.
This therefore implies that the number of species on the island stays roughly the same. but, even though the number of species does not change, the composition of those species on the island may be altered.
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would occur if we were suddenly thrown back into the “Dark ages” with no use of technology
So there are a lot of people who say that the Dark Ages, lasting about 1,000 years, set humans back technologically. However, some say that since the Dark Ages really only affected Western Europe, and not the Middle East or Asia, it wouldn't make a difference.
If there had been no "Dark Ages" there would have been no Renaissance. Historians actually argue about when Renaissance started, and the answer is than it is not possible to pinpoint a date. The Crusade did more to bring the eastern world to western Europe than they did to divide.
The largest volume of urine consists of what?
Answer:
The largest volume of urine consists of Urea
34.Blue flower (B) are dominant. Green flowers (b) are recessive. If a male plant with blue flowers (Bb) is crossed with a female plant with blue flowers (Bb), what is the percent chance that their offspring will have green flowers? * 0% 25% 50% o 75%
Answer:
25%
Explanation:
which of the following refers to the cellular interaction triggered by hormones
Answer: Interactions of Hormones at Target Cells. Hormones that act to return body conditions to within acceptable limits from opposite extremes are called antagonistic hormones.
Explanation:
Plasma estrogen levels reach their peak at the end of the luteal phase of the ovarian cycle.
a. True
b. False
Answer:
Plasma estrogen levels reach their peak at the end of the luteal phase of the ovarian cycle.
a. True
Explanation:
A woman's estrogen levels become highest towards the end of her ovulation. At this point, the woman is naturally prepared for a possible pregnancy. The occurrence of the highest estrogen levels coincides with the luteal phase, a stage of a woman's menstrual cycle, which occurs after ovulation (or the release of eggs from the ovaries), and before the start of the normal period. This luteal phase has been observed to be within 14 days for all women. By the end of the luteal phase, the corpus luteum function declines.
Which plants are most likely to adapt successfully to a climate change in their environment?
O A) plants that grow rapidly
O B) plants that reproduce asexually
O C) plants that are cross-pollinated
OD) plants that do not rely on wind-pollination
Answer:
A
Explanation:
plants that grow rapidly
The plants that are most likely to adapt successfully to a climate change in their environment are ; ( B ) plants that reproduce asexually
The change in climate favors some plant species while negatively affecting other plant species. most plants depend on the climate/weather like the wind for its reproduction/survival.
Most plants are cross-pollinated while some are wind pollinated therefore they will require the right weather/wind conditions to adapt and survive in their environment, plants growing rapidly can be hindered by changes in climate conditions.
But plants that reproduce asexually do not rely on the climate conditions to carry out their reproductive activities which makes them the most likely to adapt successfully to a climate change in their environment.
Hence we conclude that The plants that are most likely to adapt successfully to a climate change in their environment are plants that reproduce asexually
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Which would most likely be done while designing a solution?
Answer:
Steps of the technological design process include: identify a problem, research the problem, generate possible solutions, select the best solution, create a model, test the model, refine and retest the model as needed, and communicate the final solution.
Explanation:
This is a very vague question. Were there options?
What example best compares to the relationship between genes and chromosomes? PLZ Somebody help
A. A gas tank in a car because it stores energy.
B. Skin on a human because it protects the body.
C. Leaves on a tree because they provide energy.
D. A recipe in a cookbook because it gives directions.
Answer:
b
Explanation:
Answer:
D
Explanation:
I think its d
if micocondrea is the powerhouse of the cell how do i do taxes
Answer:
(;-;)
Explanation:
To be honest i dont know either
Which type of cell division causes a puppy to grow into an adult dog?
meiosis
mitosis
eukaryotic
O homeostasis
Mitosis is the kind of cell division which allows a puppy to develop into an adult dog. So, the correct option is B.
What is Mitosis?In eukaryotic cells, a process called mitosis produces two daughter cells, each of which has the same amount of chromosomes as the parent cell. Multicellular organisms, like dogs, go through a process called mitosis during which cells divide and differentiate into different cell types.
The process of meiosis, on the other hand, produces gametes with half as many chromosomes as the parent cell and is only able to occur in specialised cells, such as the ones involved in sexual reproduction. Contrarily, homeostasis has nothing to do with cell division and instead refers to the preservation of a constant internal environment within an organism.
Therefore, the correct option is B.
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Which of the following characteristics is shared by all chemical reactions?
Produce a precipitate
Show a color change
Release heat energy
Form new substances
Answer:
Release heat energy
Show a color change
Form new substances
Explanation:
good luck
what had been photosynthesis cycling interactions at the evolution and diversity of life
Answer:
Photosynthesis always involve with the sun
Explanation:
The sun is the food for the plants. Without sun, plants can't live.
What is the distance a blue whale might swim in one year?
up to 18,840 kilometers every year
Which statement best describes why accreditation is important?
a. Accreditation allows an individual to take a student loan.
b. Accreditation allows your program to charge more in tuition but gives you the edge in the job market.
c. Accreditation gives the school a better reputation, which is only important if you want a high demand job.
d. Accreditation validates the quality of the program and for some career training programs, may be
important to be considered registry eligible.
Answer: D. Accreditation validates the quality of the program and for some career training programs, may be important to be considered registry eligible.
Explanation:
Accreditation is very important in health science training programs. If the program is not accredited, you may not be able to transfer the credits to a different school and may not be eligible for your licensure or certification exam.
Answer:
Accreditation validates the quality of the program and for some career training programs, may be important to be considered registry eligible.
Explanation:
Person above is correct!
Density is mass divided by volume (d = m+ y). Based on the graph, what happens to a fixed mass of water when it is cooled from 4°C to 0°C?
Density of Water
1000
999.95
999.9
999.85
999.8-
Density (kg/cubic meter)
999.75-
999.7
999.65-
999.6
999.55
999.5-
0
8
10
12
Answer:
for anyone else who needs this the answer is:
A. volume increases and density decreases
Explanation:
I got a 5 on mastery test thanks to some comments on original answer
Based on the graph, the density of water decreases as the temperature decreases from 4°C to 0°C. Therefore, a fixed mass of water will have a higher volume at 0°C than at 4°C.
What is the density-temperature relationship?The density of a substance is defined as its mass per unit volume. In the case of water, the density varies with temperature, as shown in the graph. At 4°C, the density of water is about 1000 kg/[tex]m^3[/tex]. As the water is cooled, its density decreases, reaching a minimum of about 999.87 kg/[tex]m^3[/tex] at 3.98°C (this is the temperature at which water is most dense). As the water is cooled further, the density increases again, but it remains lower than it was at 4°C. The reason for this behavior can be explained by the way water molecules behave as they are cooled. At higher temperatures, the water molecules have more kinetic energy and are more spread out, resulting in a larger volume and lower density.
Hence, the density of water decreases as the temperature decreases from 4°C to 0°C. Therefore, a fixed mass of water will have a higher volume at 0°C than at 4°C.
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3. A county has recently evolved from underdeveloped to developed and the birth and death rate have stabilized, This is known as
O A. zero population growth.
© B. birth stabilization.
© C. demographic transition.
D. death stabilization.
A county has recently evolved from underdeveloped to developed and the birth and death rate have stabilized, This is known as Demographic transition. Thus, the correct option is B.
What is Demographic transition?Demographic transition is a phenomenon and the theory which refers to the historical shift from the high birth rates and high death rates in the societies with minimal technology, education especially of the women of the society and the economic development, to the low birth rates and low death rates in the societies with advanced technology, education and economic development of the whole society, as well as the different stages between these two scenarios.
The rise in the demand for human capital and its impact on the decline in the gender wage gap of the society during the nineteenth and the twentieth centuries period have contributed to the onset of the overall demographic transition of the society as a whole.
Therefore, the correct option is B.
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hello help pls
A glass of juice at 20°C was kept in the open. After 30 minutes, the temperature of the juice remained the same. Which statement is correct? The temperature of the surrounding air was greater than 20 °C. The temperature of the surrounding air was less than 20 °C. The temperature of the juice was equal to the temperature of the surrounding air. The temperature of the juice was less than the final temperature of the surrounding air.
Answer:
c
Explanation:
the temperature at that very moment was equally to that of the object placed there
Henry is a forensic scientist who works in the lab. He has to process evidence that was collected by the field officer. Henry knows that the field officer believes the perpetrator was the victim’s best friend, and has collected evidence to prove such. Which two types of bias affect this investigation? Henry believes that bias might be present, because the field officer selectively collected evidence. He also believes that is present, because the field officer has come to a conclusion before the evidence is processed.
1st- Selection bias, 2nd - expectation bias
Wow I feel like such a hero
Why does sound not literally blow us away?
Answer:
i.d.k what?
Explanation:
HELPP IMA GIVE YOU 20 PONTS PLISSSS
The mass extinction of the dinosaurs, approximately 65.5 million years ago, is inferred by most scientists to have been caused by
A)
a large energy surge from the surface of the Sun
B)
the occurrence of a major ice age
C)
an impact event occurring on Earth's surface
D)
earthquakes occurring along crustal plate boundaries
Answer: c
Explanation:
how can blood be stored much longer
Answer:
Whole blood can be stored at 4–8°C for up to 24 hours before the serum is separated, but it must not be frozen. Whole blood should be allowed to clot and then centrifuged at 1000 × gravitational units (g) for 10 minutes to separate the serum.
hope this helps
have a good day :)
Explanation:
Fiona wants to use the scientific method to answer the question “Do oxygen levels in the air affect rates of photosynthesis?” She reads about photosynthesis in her biology book and is ready to carry out the next step. What should she do next?
perform an experiment
design a procedure
make observations
form a hypothesis
The first thing Fiona, or anyone, should do is form her hypothesis.
The hypothesis is your own proposed explanation for whatever phenomenon you're trying to study. Think of it as a predetermined idea of what could happen based on what you already know.
Answer:
The correct answer is D!:)
Explanation:
Hope this helps!:)
This need to be present for us to be allowed to look at DNA from a hair sample
Root
Cortex
Medulla
The Burning of either wood or fossil fuels will add carbon dioxide to the atmosphere. How is the burning of fossil fuel different?
A. Unlike would fossil fuel require oxygen to burn
B. Unlike word fossil fuel do not require oxygen to burn
C. Unlike would fossil fuel burn without releasing energy
D. Unlike wood fossil fuels contain carbon that has been stored for millions of years
A drug that prevents mircotubules from depolymerizing could be used to:_________
A) stimulate
B) inhibit mitosis
C) promote cell division
D) treat Alzheimer's disease
Answer:
A) stimulate would be the answer
Hope it helps
which of the organ will balance the glucose level in the body
Answer:
LIVERExplanation:
One of the liver’s main roles in the body is controlling the amount of glucose circulating in the blood. By storing excess glucose as glycogen and creating new glucose from proteins and fat byproducts, the liver is able to maintain balanced glucose levels in your body at all times.
Answer:
The liver keeps glucose level balanced
How do mutations happen?
Answer:
HOPE THIS HELPS
Explanation:
A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.
Answer:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke
Explanation:
Which land biome would have a smaller plant and animal population because of its colder climate?
Answer:
A. Tundra
Explanation:
Think Antarctica. That's a Tundra.
Answer:
Tundra
Explanation:
When someone says they have a "fast" metabolism, they are referring to the fact that they are able to efficiently
break down complex molecules at a higher rate than the average person.
Which of the following answer choices best describes someone with a "slow" metabolism?
Choose 1 answers
Low rate of catabolism
Low rate of anabolism
High rate of catabolism
Equal rates of catabolism and anabolism
Answer:
CORRECT (SELECTED)
Low rate of catabolism
Explanation:
Someone with a "slow" metabolism would have a low catabolic rate because their ability to break down complex molecules occurs at a slower, less efficient rate than someone with a "fast" metabolism.
Chomosomes are duplicated during
Answer:
Chomosomes are duplicated during interphase
Brainliest?