Increased biodiversity is not a possible reason for migration.
Which of the following is possible reason for migration?
The correct answer is option B, that is, diminished food supply. Some of the animals move to comparatively short distances in search of food or more favorable breeding or living conditions. However, the majority of animals, which migrate do so in order to find more habitable conditions and food.
What is possible cause for a decrease in ecosystem productivity?
an increase in the biodiversity of the ecosystem.
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.
Is the water hyacinth an invasive species that can spread extremely fast?
The water hyacinth is an invasive species that can spread extremely fast, blanketing a water surface in a very short period of time. It can limit boat traffic, swimming, and fishing, and it can deprive native plants and animals of sunlight and oxygen, thus reducing the local biodiversity.
What are the economic reasons for migration?
(i) Economic Factors Most of the studies indicate that migration is primarily motivated by economic factors. In developing countries, low agricultural income, agricultural unemployment and underemployment are considered basic factors pushing the migrants towards developed area with greater job opportunities.
Is the total number of organisms that an ecosystem can support?
Definition of Carrying Capacity
The number of organisms that an environment can support (its maximum population) is called its carrying capacity.
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.
Is migration is always temporary?
TRUE. Migration is always temporary.
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 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.
Which of the following is most likely to cause a decrease in biodiversity?
Important direct drivers affecting biodiversity are habitat change, climate change, invasive species, overexploitation, and pollution (CF4, C3, C4.
How microevolution and migration can affect an ecosystem?
Explain how microevolution and migration can affect an ecosystem. Migration can negatively impact an ecosystem if the migration is permanent and leads to the loss of native species. … Microevolution, like migration, can aid the survival of native species.
Where is the water hyacinth invasive?
Water hyacinth is thought to be native to the Amazon River basin of South America. It was introduced to the United States in 1884 at the Cotton States Exposition in New Orleans, Louisiana. It spread across the southeastern U. S. and was identified in Florida in 1895. It was reported to be in California in 1904.
Is the water hyacinth an invasive species?
Today’s featured aquatic invasive species is the water hyacinth. Description: According to the Midwest Invasive Species Information Network this invasive species is a free floating aquatic plant that typically grows 1.5-3ft tall. … Origin: The water hyacinth is native to the Amazon Basin in South America.