What is the primary source of energy for most ecosystems

How many chromosomes are in a gold fish?

Which muscle is responsible for inhalation ?

Lola needs to sign 6 invitations. using stopwatch that measures time to tenths of a second, it takes lola 5.3 seconds to sign her full name. going by the accuracy of the stopwatch, which is the most accurate determination for the number of minutes lola needs to sign all 96 invitations