Which of the following describes work?
a) lifting a 1 kg mass for 1 m
b) holding a 1 kg mass for 1 hour
c) moving 1 m in 1 hour
d) holding 1 kg mass

Does mitochondria still meet the definition of a eukaryote why or why not?

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important