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 .

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?

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

A male and female robin fight for territory but mate in the spring.What kind of relationship exists between these organisms?A.CommensalismB.ParasitismC.PredationD.CompetitionSUBMITarrow_backPREVIOUS

On a branching diagram, where should existing species be placed?Multiple choice question.At the base of the treeOn larger branchesOn twigsAt the nodes

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