PLZ HELP as a result of the change in the migratory pattern, the two groups of blackcaps(those that migrate to England vs those that migrate to spain) have different mating seasons. Blackcaps that migrate to England have an earlier mating season. Scientists believe that this difference may result to two different species of birds. This shows: a) the effects of symbiosis b)the effects of local evolution or migration on an ecosystem c) the difference between biotic factors in an ecosystem d) how migratory patterns change in response to alterations in an ecosystem

b) the effects of local evolution or migration on an exosystem

Explanation:

a) false; symbiosis is the relationship between two species with either a mutual benefit to both creatures, one benefiting and the other remaining neutral, or one being negatively affected while the other benefits. There is no relationship between the two groups of blackcaps to a is false.

b) true; the effects of local evolution or migration on an ecosystem. Local evolution has not occured yet but migration has. The effect that scientists believe may happen to the ecosystem because of the migration is the creation of a new species, which would definitely effect an ecosystem

c) false; biotic factors are the living parts of an environment, such as plants, animals, and insects. The difference in the two groups of blackcaps isn't what biotic factors they use but when their mating season is. Biotic factors have no effect whatsover.

d) false; there are no given alterations in the ecosystem. Migration patterns do not just change because of something as small as a shift in bug population. Migration habits are largely genetic, such as is the case of monarch butterflys migrating from north to south and back across the continent. If a group of blackcaps are migrating somewhere different, it has been ocurring for a while, so it isn't fault of the ecosystem that suddenly made blackcaps switch migration course.

D how migratory patterns change in response to alterations in an ecosystem

Explanation:

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