According to research by Joseph Connell, rock barNaCles living at lower levels of the intertidal zone grow faster and, through competition, eliminate stellate barNaCles from the area. This indicates that ________.
1) Rock barNaCles and stellate barNaCles have a mutualistic relationship
2) Rock barNaCles and stellate barNaCles have a commensal relationship
3) Rock barNaCles and stellate barNaCles have a competitive relationship
4) Rock barNaCles and stellate barNaCles have a parasitic relationship
