(Question)
The color of leaves on deciduous trees usually changes in the autumn season, and common deciduous trees are the oak, elm and beech. Given these facts, which tree's leaves change color in autumn among the following options: - Fir - wind - Palm - blue - elms - Oak - Ficus - Aves
(Answer)
Oak

(Question)
Invertebrates are animals that lack a vertebral column, or backbone, and principal invertebrates are anostracans and ostracods. Given these facts, what lacks a vertebral column, or backbone among the following options: - fungi - parasites - cacti - Leptospirosis - insects - bushes - Conifers - anostrans
(Answer)
anostrans

(Question)
Most fungi get organic compounds from dead organisms, and molds are microscopic fungi. Given these facts, what gets organic compounds from dead organisms among the following options: - plants - elms - mud - molds - dead cats - cows - trees - sludge
(Answer)
molds