What happened to the greenish warbler birds as they migrated from the southern portion of their range up around?
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 of the following is possible reason for migration?
People migrate for many different reasons. These reasons can be classified as economic, social, political or environmental: 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.
What is a possible cause of a decrease in ecosystem productivity?
The answer is decrease in biodiversity.
What will happen to snakes in the long term of mice become extinct?
Plants are eaten by grasshoppers, which are eaten by mice, which are eaten by snakes. What will happen to snakes in the long term if mice become extinct? … The number of snakes will decrease permanently, but they will not die out completely.
Which of the following is the major cause of biodiversity loss in Earth’s oceans?
Habitat destruction is a major cause of biodiversity loss. Habitat loss is caused by deforestation, overpopulation, pollution, and global warming. Species that are physically large and those living in forests or oceans are more affected by habitat reduction.
What happened to the other members of the food chain if the cat is removed?
b. Consider the following food chain: Garden plants are eaten by snails, which are eaten by birds, which are eaten by the household cat. What happens to the other members of the food chain if the cat is removed? … The number of plants and birds increase and the number of snails decreases.
What are three reasons that organisms interact?
What are three reasons that organisms interact? Organisms interact because of mating, competition for food resources, defense, and assertion of dominance.
Why was the reduction of the bison population to under 1000 individuals?
Why was the reduction of the bison population to under 1,000 individuals a bottleneck event for the species? … It drastically reduced the gene pool of the species.
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.
Which of the following is a cause for a decrease in biodiversity?
Biodiversity loss is caused by five primary drivers: habitat loss, invasive species, overexploitation (extreme hunting and fishing pressure), pollution, climate change associated with global warming. In each case, human beings and their activities play direct roles.
Does secondary succession occurs in ecosystems without soil?
Primary and secondary succession occur after both human and natural events that cause drastic change in the makeup of an area. Primary succession occurs in areas where there is no soil and secondary succession occurs in areas where there is soil.
Will snakes go extinct?
Climate change and human expansion have threatened species across the globe. Many snake species are declining in number, or are even almost extinct. If snakes became extinct, the prey population that snakes feed on would grow, and the predators that feed on snakes may die out.
What would happen to the population of snake if all the mice are killed?
Rodent, amphibian, and all other species which once were eaten by the snakes will increase dramatically, over-consuming their own prey, such as plants, which will eventually lead to a major collapse in all of those populations.
What would happen if the population of snakes decreased rapidly?
What is the most likely effect this will have on other organisms? The snake population will decrease rapidly and the grass population will increase rapidly.