The term “cosmic abundance” is made up primarily of what gases?

The term "cosmic abundance" is made up entirely of letter symbols, syllables, and English words including one adjective and one noun.  It has no gas in it.

muscle endurance

explanation:

i can do 50 in a row ( but i get so tired after that)

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.