If fossils of an animal or plant are found in a place then that animal or plant used to live in that place.
Frozen fossil animals are found in permafrost.
If frozen fossils are found in permafrost, that plant used to live in that place.
If what are found in permafrost, that plant used to live in that place?

A) Echinoids
B) Conifers
C) deuterostomes
D) bullfrogs
E) frozen fossils
F) one celled organisms
G) Nematoda
H) important habitats