Which of the following is an example of a competitive relationship in an ecosystem?

a . an insect species that captures other insects species by posing as a leaf in a tree

b . a bird species that does not build its own nests but uses nests abandoned by other bird species.

c . a mouse species that avoids hawks by searching at night for seeds

d . a plant species that grows taller than other plants and deprives shorter plants of light.

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms