Which of these is an example of gene flow? This in on Plato
A.
German immigrants settle in a colony in Eastern Pennsylvania without mixing with the locals.
B.
A few black sparrows join a population of brown sparrows and mate with them.
C.
Indiscriminate hunting reduces the blue whale population, which later revives.

solvent

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pls mark as brainliest

producers within ecosystems are essential as they are at the base of the food chain. plants are examples of producers. they use the process of photosynthesis to capture light energy and use it to convert simple inorganic substances (carbon dioxide and water) into organic substances (glucose).