What is the ancient language(s) found on the large stone tablet in Rosetta

Explain the importance of producers, primary consumers, secondary consumers and decomposers in an ecosystem.

What is a cordon and where is it found

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