Answer:Astronomers estimate the age of the universe in two ways: 1) by looking for the oldest stars; and 2) by measuring the rate of expansion of the universe and extrapolating back to the Big Bang; just as crime detectives can trace the origin of a bullet from the holes in a wall.
Explanation:
E - Continuous reinforcement. None of these are punishments and cassical conditioning involves assimilating two stimuli
I think it's c because depression can be genetic and environmental.
hope this helps.
nakalimutan mo po i post ang tanong plese post the question para maansetan na min
