Dr. Delgado is working on understanding aggression in children. Dr. Delgado and his associates stand outside a one-way mirror and note aggressive actions the children make after watching 15 minutes of violent videos. "Aggressive acts” were not clearly defined by Dr. Delgado and they found that many of the children's actions were not consistently rated between the observers. This is an example of poor:

a. Test-Retest reliability
b. Face Validity
c. Internal validity
d. Inter-rater reliability

the indirect evidence that supports that the bubbles so generated are oxygen is that the bubbles in the plant increases when it moves towards the brighter light.

(i got this from the internet)

explanation:

he would destroy their leader and force them to a new religion. why would the 'columbian exchange' be considered the tsunami of unintentional "bio-terrorism"? ? some terrorists used to mail powder substances, so that when the victim opened it, the powder could get into their system and make them sick.

(hope this )

the atmosphere, the biosphere, the hydrosphere, and the lithosphere.   are all physical systems is probably