Which is a clue that a chemical change has occured?
a. a beaker suddenly becomes very warm when you mix two room-temperature liquids in it.
b. a liquid forms bubbles when it reaches a high temperature.
c. water changes color when you add food coloring to it.
d. a car door feels hot if you touch it on a summer afternoon.

A

Explanation:

B: That’s boiling

C: That’s physical.

D: That’s just heat being added.

It’s A because two liquids making one warmer liquid isn’t natural without a chemical making it do so.

answer is a

explanation:

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.