The amount of matter in an object is known as
the object's weight
the object's size
the object's density
the object's mass

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

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false

Pl which diagram illustrates prophase?