Which is an example of an ecosystem? a. one northern cardinal b. one group of yellow-bellied cuckoos c. groups of ruby-throated hummingbirds, white oak trees, and brown-headed cowbirds d. groups of wild turkeys, american robins, and blue jays in an oak forest with an annual precipitation of 105.9 cm

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

Cattle with brown fur and cattle with white fur will produce a reddish roan calf . when examined closely, the calf show about an even number of brown hairs and white hairs that give a reddish appearance when viewed from far away. the fact that both the brown fur allele and the white fur allele are expressed equally in the offspring is an example of

Which of the following graphs have the same wavelengths