Answer:
they helped lead to the exploration and discovery of the Americas, and the Colombian Exchange
Explanation:
The answer is b how bird choose were to build there nest
The statement, "Network diagrams illustrate the technical constraints among activities," means the activities are constrained because one activity cannot be started until the predecessors are finished.
Option: B
Explanation:
- Network means an inter connection between various sectors. This type of diagram shows the inter relationship among the sectors. Each activity has a relation with the other activity. Before finishing a particular work it is not possible to start the next work.
- These process is known as technical constraints. That means the system is mechanized in such way that will restrict the inception of further work before the ending of predecessors. Network diagram always proved helpful in describing the connectivity and accessibility among various segments.
Selection bias
is a kind of error that occurs when the researcher decides who is going to be studied.
