Which chemical equation represents a single replacement reaction? A. 2KClO3 → 2 KCl + 3O2

B. Zn + 2 HCl → ZnCl2 + H2

C. NaOH + HCl → NaCl + H2O

D. 2NA + Cl2 → 2 NaCl

Which type of neuroglia is found outside of the brain?

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

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form