Many communication services, such as Internet service and television channels, are provided through the use of satellites. Which reasoning explains why satellites are useful for communication? Satellite signals are not affected by the weather.

Satellite signals can be shut down during emergencies.

Satellite signals can reach a wider area than ground-based signals can.

Satellite signals are not affected by tall buildings, bridges, or other structures.

Loss of protected health information collected for research should be directly reported to:

Which of the following is a true statement? question 8 options: populations can't evolve, only individual organisms. individuals have adaptations that can change over time. individuals have traits that may or may not make them successful at reproduction. individuals evolve to have adaptations.

Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.