<span>It may be difficult for ecologists to determine the size of a bird population if that population migrates to different locations throughout the year. During migration, some birds may split off from the group and not return, others may die, and still others may join. Therefore, the bird population will be in constant flux. It is hard to know, when the birds return to their prior location, if the population consists of the same group of birds (in addition to deaths and births) or whether it has grown or shrank through other means. However, to estimate the size, an ecologist can track a migratory flock through several years, counting each year to get a general sense of the population size. Additionally, given one measurement, an ecologist could consider the average lifespan and birth rates of the population to extrapolate the size of the population in subsequent years.</span>
Mitochondria are the powerhouses of the cell because they break the chemical bonds of glucose to release energy that our cells use to do work and perform chemical reactions.
Answer:
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Explanation:
Answer: Genetic variation within a species can result from a few different sources. Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. ... As a result, the tree-colored moths are more likely to survive, reproduce, and pass on their genes.
Explanation:
Answer:
<u>Las 2 semejanzas son</u>...
que son tecnicas de conservacion de los alimentos usando calor
teienen el fin de destruir patogenos y sus esporas
<u>Las 3 diferencias son...</u>
En la pasteurizacion se calienta un alimento a 72ºC de 15 a 20 segundos
En la esterilizacion se calienta a temperaturas superiores a 100ºC por mas tiempo
En la esterilizacion son comidas mas diversas como carnes, pescados, etc...