True/false
Sometimes extinction can have a very large impact on an ecosystem. Such
important species are called keystone species.
True/false
Sometimes species are closely linked to another species. When one goes, the
other one that depended on it goes as well -w just like dominoes knocking each
other over. This is known as “domino extinction."

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.

what bodys are there orbiting?

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )