An contract is an unstated or unintentional agreement that may be deemed to exist when the actions of any of the parties suggest the existence of an agreement./search?

Implied contract

Explanation:

An implied contract is a legally binding agreement that is based on the actions or circumstances of one or more parties in a transaction.

Although it is not written down it is enforceable

For example if electronics are purchased it is implied that they must function properly, when newly purchased electronics do not perform as expected the buyer can hold the seller liable.

i would ask my boss to do more things around the car shop. and i would slowly work my way up to working on cars and becoming a full time mechanic.

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'