Is this from the past or present?
Past
Is this from the past or present?
Present
Is this from the past or present?
past
Does this use human energy or machine energy?
machine energy
Is this from the past or present?
Does this use human energy or machine energy? The plough
human energy
Does this use human energy or machine energy?
machine energy
Is this from the past or present?
past
Is this from the past or present?
present
Is this from the past or present?
Present
What is invention?
An invention is a brand-new tool or a new way of doing something
Does this use human energy or machine energy?
machine energy