The seminal work that defined and provided a structure for the concept of cultural. competence was a monograph published in 1989 by the Georgetown University Child. Development Center through a contract with the Department of Health and Human. Services as part of the Child Adolescent Service System Program (CASSP).
Insects also probably have the largest biomass of the terrestrial animals. At any time, it is estimated that there are some 10 quintillion (thatâs 10,000,000,000,000,000,000 for those who like actual numbers) individual insects alive. In the United States, the number of described species is approximately 91,000.
Over seven million species of plants and animals live on planet earth, according to the best estimates made by biologists. If you add in the world's species that aren't plants or animals, such as lichens, mushrooms and bacteria, the total number of species leaps much higher. Tallying the estimates of all living things brings the number to 11.3 million species currently on earth.