A salamander is a vertebrate that spends part of its life cycle in water (juvenile stage) and part on land (adult stage). In both life stages, the salamander's body temperature depends on its surrounding environment, so the salamander demonstrates behavior.

Ectothermic

Explanation:

Ectothermic behavior is a type of behavioral mechanisms adopted by animals to regulate their body temperature by depending on the temperature of their environment or external source. These behavior is exhibited by animals that do not produce heat internally to regulate their body temperature, but rely on the external heat sources to maintain their body temperature, which is vital for the normal functioning of their body.

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles