Answer:
A. When many species share a single ancestor
Explanation:
If a Caterpillar is grown in the dark, then it will be the same color as a Caterpillar when it metamorphisizes
The correct answer is tricyclic antidepressants.
Tricyclic antidepressants (TCAs) are mainly subscribed for treating depression, however they are also commonly used to treat attention-deficit hyperactivity disorder and chronic pain. Also, TCAs are used for the treatment of enuresis, also known as bedwetting.
Benzodiazepines is a type of psychoactive drugs commonly used to treat anxiety, panic disorder, generalized anxiety disorder, insomnia, seizures and alcohol withdrawal.
Selective serotonin reuptake inhibitors is a class of antidepressants used to tread depression, obsessive-compulsice disorder, generalized anxiety disorder and eating disorders.
Monoamine oxidase inhibitors are mainly used to treat depression but also panic disorder.
There are many reasons to why slaves were essential in the colonial economy:
Slaves were generally used more in the south, because large plantations were found there, which meant that the need for large amounts of workers.
Slaves provided cheap labors, and as they were not "citizens" of the US, they were not allowed their rights.
Slaves were also relatively easy to buy and replace, however, their survival rates were not that good after they traveled long distance.
etc.
hope this helps
