Which two body systems must directly interact for vertebrate organisms to exchange gases? F Skeletal system and muscular system
G Excretory system and reproductive system
H Circulatory system and respiratory system
3 Digestive system and immune system

Where would you expect to see seedless plants, such as ferns and mosses? a. in a botanical museum, because they are all extinct b. low and close to the ground in a moist environment c. climbing high while circling the branches of another plant d. deeply rooted in a forest with a trunk that reaches 20 meters or more

Abnormal softening of a gland is known as

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure