What type of relationship first existed between dogs and early humans?

A. commensalism
B. parasitsm
C. mutualism
D. competition

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?

Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.

What element does susan b. anthony include in this passage to strengthen her argument?