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.
There are currently less than 1,000 mountain gorillas remaining in the wild. The biggest threats to these critically endangered great apes come from deforestation and the regionâs growing population. The forest where mountain gorillas live is fertile and rich in biodiversity. This has made it one of the most populated regions in Africa, with 85% of the population making its living by growing food on the land.