How can the actions of one species or harm another species?

Which steps are important when designing and conducting a scientific experiment? hide the results from fellow scientists. identify the independent variable. eliminate all dependent variables. address any confounding variables. form a non-falsifiable hypothesis.

On a supply and demand graph, equilibrium is the point where the two curves meet. the supply curve begins. the supply curve ends. the demand curve ends.

In exchange for land, a knight agrees to be a sort of sub-vassal to a vassal. this agreement was known as: investiture homage tyranny subinfeudation