Which is a possible reason for migration?

social migration – moving somewhere for a better quality of life or to be closer to family or friends. political migration – moving to escape political persecution or war. environmental causes of migration include natural disasters such as flooding.

Which of the following is NOT a possible reason for migration?

Increased biodiversity is not a possible reason for migration. Biodiversity of the variety of life in an ecosystem and an increase in variety would not let migration happen.

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What is a possible cause for a decrease in ecosystem productivity?

the possible cause for a decrease in ecosystem productivity is : B. a decrease of the biodiversity o an ecosystem. Decrease in biodiversity means that there will be less organisms that support each other to maintain the balance in the ecosystem, which eventually decrease its productivity.

What happened to the greenish warbler birds as they migrated from the southern portion of their range up around the Tibetan Plateau a they evolved separately as they moved north and became two separate species B the original species died off but?

What happened to the greenish warbler birds as they migrated from the southern portion of their range up around the Tibetan Plateau? a. They evolved separately as they moved north and became two separate species. … They were unable to adapt and evolve to ensure their survival and became extinct.

Which mechanism do the different organism populations found across the tundra exemplify?

In the Tundra region, the diversity of the organisms present is high. Multiple different species of different organisms are present in these regions, which makes them a diverse area on the Earth. The mechanism responsible for these different populations is the species diversity.

Is migration is always temporary?

TRUE. Migration is always temporary.

What would occur if the snake population is removed from the ecosystem?

Answer Expert Verified. If an animal like the snake were to be removed from a food chain, the entire ecosystem could easily fall apart. It will be destroyed. … And that the mouse would be eaten by a snake..the snake population would decrease from starvation and the grass would increase.

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Which of the following are not abiotic factors of an ecosystem?

Plants are not an example of an abiotic factors. Explanation: Our environment comprises of two factors namely biotic factors and abiotic factors. Biotic factors are those in ecosystem that consists of all living organisms such as plants, trees, humans, insects, animals, birds, etc.

Which of the following about exponential growth curves is true?

The correct option is A. Exponential growth curve is a type of curve that is obtained when a resource is abundant for a particular population of specie. In this case, the growth rate of each individual in the population remain the same and this makes the population to grow rapidly and increase in size.

What happens to the other members of the food chain if the cat is removed?

What happens to the other members of the food chain if the cat is removed? If the cat is removed from the food chain: The number of plants and birds increase and the number of snails decrease.

What are two main distinctions between the East Siberian greenish warbler?

Plumbeitarsus have two wing bars while viridanus have one wing bar. Their southern ring gradually changes the plumage patterns. The male greenish warblers are very good in singing to defend their territories and also to attract female ones.

What is most likely to result immediately after a rain forest in Brazil is clear cut?

Brazil clear cut is an example of secondary succession because after the clear cut some precursors like seeds, roots and other parts of the plants or trees can support the regrowth of plants and trees. Initiating the succession again.

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What would occur if the snake population is removed from the ecosystem pictured above quizlet?

What would occur if the snake population is removed from the ecosystem pictured above? … The jellies devoured all the zooplankton and fish larvae, drastically reducing the numbers of the native fish populations.

Which is most likely to help an introduced species become invasive?

Answer: Having a low reproductive rate, a strong predator in new habitat and a great tolerance to a wide range of conditions help introduced species become invasive.

Which of the following is likely reasons for the migration of native species from an area?

A forest fire can destroy a natural habitat, forcing the native organisms to move and relocate, thus leading to migration of a species from area to another. Increased competition for limited resources can also be a factor.

Population movement