Mark each event in chronological order 1st through 6th. Luigi da Cadamosto claims Cape Verde for Portugal.
Vasco da Gama establishes an all-water route around Africa.
Pedro Alvares Cabral claims Brazil for Portugal.
Portuguese sailors begin trading for African war slaves.
Bartholomeu Dias reaches the Cape of Good Hope.
The Portuguese win control of the Spice Islands.

The belmont principle of beneficence requires that: a. subjects derive individual benefit from study participation. b. potential benefits justify the risks of harm. c. the study makes a significant contribution to generalizable knowledge. d. risks are managed so that they are no > minimal.

Abrief, "first-step" presentation of a work to be completed is called a

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.