Final answer:
Earth's climate system is in a state of dynamic equilibrium, meaning that energy inputs and outputs are balanced. Human activities can have an impact on climate by influencing the energy balance.
Step-by-step explanation:
The statement that Earth's climate system is in a state of dynamic equilibrium means that energy inputs and outputs are balanced. This implies that there is a continuous exchange of energy between Earth and the atmosphere, resulting in a relatively stable climate over time. However, it does not mean that the climate is static or unchanging.
Human activities can have an impact on climate by influencing the energy balance. For example, the burning of fossil fuels releases greenhouse gases, which trap more heat in the atmosphere and contribute to global warming. While the climate system has the ability to adjust to certain changes, human activities have the potential to disrupt the equilibrium and lead to significant climate changes.