Which is another name for observations?

inferences

data

predictions

models

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.

it is a limiting nutrient limited by a single nutrient in the ecosystem, & the single goes very slow.

garbage disposal because lysosomes dispose of old cell parts like garbage disposals dispose of old food.

i think the answer would be a. after sentence 14! i hope i at least a little