(Question)
If having no natural predators increases expenditures, then what does having no natural predators increase? Answer choices: - Animal survival - in the frog family - fur and fat - scarce resources - hyperthyroidism - competition - food and shelter - expenditures
(Answer)
expenditures

(Question)
If salamanders have a relatively complex circulatory system with a three-chambered heart, then which animal has a circulatory system with a three-chambered heart? Answer choices: - animals - Salamander - fur seals - mammals - alpacas - a fish - warm-blooded - barnacles
(Answer)
Salamander

(Question)
If fog is formed by h2o vapor condensing in the air, then what kind of vapor condenses to form fog in the air? Answer choices: - h2o - Oxygen - H20 - Dew - NaCl - sodium chloride - rain - mountain ranges
(Answer)
h2o