The arms of humans and the flippers of dolphins have a similar bone structure. so, they’re organs. the legs of a kangaroo and the legs of a jumping spider allow both organisms to jump. however, spiders are invertebrates, and kangaroos are vertebrates. this difference makes their legs structures.
1)a. analogous b. homologous c. vestigial
2)a. analogous b. homologous c. vestigial

i believe the correct answers are:

1) B. homologous

2) A. analogous

1)  B. homologous

2) A. analogous

Explanation:

The arms of humans and the flippers of dolphins are homologous organs as both are made of the same pentadactyle pattern of bone structure, but their function is different. Arms of humans perform the function of holding things and the flippers of dolphins are used for swimming. The legs of a kangaroo and the legs of a jumping spider are analogous organs because both organs are dissimilar in origin but perform the same function. They use for jumping.

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg