If earth was not tilted there would be no

There would be no seasons.

Explanation:

Seasons are four divisions of the year marked by particular weather patterns and daylight hours resulting from the earth's changing position with regard to the sun. This for this season's are spring, summer, autumn and winter.

answer; i believe the correct answer is ( proteins );

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.