The richness of the biosphere.
The biosphere supports between 3 and 30 million species of plants, animals, fungi, single-celled prokaryotes such as bacteria, and single-celled eukaryotes such as protozoans. Of this total, only about 1.4 million species have been named so far. Earth is comprised of full of different organisms and species.
Ecology and Biosphere
Scope of Ecology:The scientific study of the interactions between organisms and the environment is
called ecology. Because of its great scope, ecology is an enormously complex and
exciting area of biology, as well as one of the critical importance.
the richness of the biosphere‐ the entire portion of Earth inhabited by life‐ and
can provide the basic understanding that will help us to conserve and sustain that
richness, now threatened more than ever by human activity.
The richness of biosphere
is particularly apparent in tropical forests. Earth's tropical forests are home
to millions of species, including an estimated 5‐30 million still undescribed species
of insects, spiders, and other arthropods. In fact, every part of the biosphere
is inhabited by diverse life forms, most of which, especially the microbial species,
are unknown to science.
This chapter introduces the science of ecology and describes
some of the factors, both living and nonliving, that affect the distribution of
organisms. It also surveys the major types of aquatic and terrestrial habitats where
organisms live and where ecologists go to study them. The scientific discipline of ecology addresses the
full scale of life, from tiny bacteria to processes that span the entire planet.