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1:if immigration and emigrattion numbers remain equal, which of these could cause a slowed growth rate

increased birth rate

constant death rate

decreased birthrate

constant birth rate


3:as resources in a population become less available the population

declines rapildy

increases slowly

reaches carrying capacity

enters a phase of exponetial growth



4:when the exxponetial phase of logistic growth curve of a popualtion ceases

the size of the population drops

the size of the population stays the same

population growth begins to slow down

population growth begins to speed up



5: which of the following is the most likely reason that a population of mice in a farming area suddenly increases

more mice immigrate from neighboring areas

fewer mice emigrate to neighboring areas

more food is availble as grain is harvested

more nesting space is availble as new barns are constructed

Verified Answer :

Greenleafable
  1. If immigration and emigration numbers remain equal, decreased birth rate could cause a slowed growth rate. Decreased means that something is getting lower, so I guess that means that growth rate is also being slower than usual.
    3. A    s resources in a population become less available the population reaches carrying capacity. Carrying capacity has to do with the total number of entities in a population.
    4. W    hen the exponential phase of logistic growth curve of a population ceases, population growth begins to slow down. When something ceases, it stops, which means that other processes also stop or become slower.
    5. The most likely reason that a population of mice in a farming area suddenly increases is that more food is available as grain is harvested. This means that there is more food for mice as well, which is why they tend to settle in these areas. 

If immigration and emigration numbers are equal, the decrease in birth rate results in slowed growth rate.

If the resources in a population become less available, the population reaches the carrying capacity.

When the exponential phase of logistic growth curve of a population ceases, the population growth begins to slow down.

When food as grain is harvested, the population of mice in a farming area increases.


Further Explanation:

Immigration is the process when individuals come from outside a place to inhabit there. The population increases due to immigration. Emigration is the process when individuals move out of a place to inhabit somewhere else. Emigration decreases the population. When immigration number is equal to emigration number, no change in population occurs due to these two processes. The slow down the growth rate of a population is because of the decrease in birth rate.

Once the resources are less obtainable, the population reaches the carrying capacity. A cut down within the population growth and further stop is observed because of the restricted resources obtainable in a specific space. the restricted range of entities that a population will support is known as the carrying capacity or the size of the population at that the expansion stops because of restricted resources is known as the population's carrying capacity.

A logistic growth curve is an s-shaped (sigmoidal) curve that is quicker within the center growth period, and slowly at the highest, leveling off at a maximum worth after some amount of time. The initial section of the curve is exponential; the speed of growth accelerates as it approaches the center of the curve. At the center (K/2), the expansion rate begins to decelerate but continues to grow until it reaches an asymptote, K that's termed the "Carrying Capacity" for the environment. This type of curve is typically accustomed model biological growth patterns where there is an initial exponential growth quantity followed by a leveling off as a lot of the population is infected or as the food supply or another issue limits further growth.

Once the grain is harvested there's a lot of food obtainable for the mice as well. So, during this case, the population will increase automatically, and that is why they have a tendency to settle in these areas.


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Answer Details:

Grade: High School

Subject: Biology

Chapter: Ecology


Keywords:

Immigration, emigration, birth rate, death rate, growth rate, resources, population, entities, individuals, logistic growth, exponential phase, mice, grain harvested, farming area.

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