If you hit $0 Avail. funds for trading, your account will go into a margin call and Ameritrade will force you to sell positions or deposit money. I'm going to assume your Account Balance isn't -8.1k because you would have hit a margin call long before your account went negative unless this all happened overnight.
Sadly, these peaceful animals may not survive into the next century. Ape conservationists say time is running out, as there are only about 720 mountain gorillas left in the world, and the majority of gorilla populations are plummeting.
Some primatologists believe the Bwindi gorillas may be a separate subspecies. Previous population. In the 100 years since its discovery, the mountain gorilla has endured uncontrolled hunting, war, disease, destruction of its forest habitat, and capture for the illegal pet trade. These factors led to a dramatic decline in numbers. Indeed, there were fears that the mountain gorilla would become extinct in the same century it was discovered.