Among American Robins, the female does most of the nest-building. She starts by selecting a good site. Usually, this is a place protected from rain, wind and sun, often on tree branches hidden by leaves. Then, using grasses and small twigs, she forms a cup-shaped nest. After forming this cup, the robin adds mud to reinforce it and cement it to its location on the tree branch or other base. Finally, she lines the nest with soft grasses and hairs. All this usually takes about five or six days, and it results in a fine home, about fifteen to twenty centimetres across and seven to fifteen centimetres high.Which organisational structure does this text primarily use?

A robin builds its nest on the branches of a maple tree, and the tree is not affected by the placement of the nest. This relationship is best described as .

The survivorship curves of the American robin, a type of migratory songbird, and the common green darner, a type of migratory dragonfly, are shown below.What statement is best supported by the survivorship curves? A. American robins have similar death rates throughout their lifespan, while the death rate of common green darners changes over their lifespan. B. A very high proportion of common green darners reach adulthood and live to older ages. C. American robins have a high survival rate for most of their lifespan and then decline rapidly in old age. D. Younger American robins have higher death rates than older American robins, while younger and older common green darners have similar death rates.

The survivorship curves of the American robin, a type of migratory songbird, and the common green darner, a type of migratory dragonfly, are shown below.What statement is best supported by the survivorship curves? A. Younger American robins have higher death rates than older American robins, while younger and older common green darners have similar death rates. B. American robins have a high survival rate for most of their lifespan and then decline rapidly in old age. C. American robins have similar death rates throughout their lifespan, while the death rate of common green darners changes over their lifespan. D. A very high proportion of common green darners reach adulthood and live to older ages.

What is the trophic level of the robin in this food chain?Oak tree Caterpillar Robin FoxGroup of answer choicesProducerFirst-level consumerThird-level consumerSecond-level consumer

Robin is a working mother with two children. She is also a daughter to her own mother and father and has two siblings. In Robin's case, the titles of mother, employee, daughter, and sister represent which of the following: StatusExpectation Position Role