MIRCRO-ORGANISMS
Gravity must be caused by an Agent acting constantly according to certain laws, but..
MAMMALS
Gravity must be caused by an Agent acting constantly according to certain laws, but..
REPTILES AND AMPHIBIANS
Gravity must be caused by an Agent acting constantly according to certain laws, but..
INVERTEBRATES
Gravity must be caused by an Agent acting constantly according to certain laws, but..
FISH
Gravity must be caused by an Agent acting constantly according to certain laws, but..
BIRDS
Gravity must be caused by an Agent acting constantly according to certain laws, but..