Which is a reliable source of scientific information

Identify the type of energy used in each action. the flexing of an arm muscle: a signal transduction process by a neuron: a ball at the top of a hill: 1. electrical energy 2. mechanical energy 3. gravitational potential energy

Which organelle breaks down sugar molecules that supply energy to the cell ?

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?