How did biodiversity begin?
The history of biodiversity during the Phanerozoic era (the past 540 million years) begins with the rapid growth of the Cambrian explosion — the period in which most phyla of multicellular organisms appeared.
How was biodiversity found?
Looking at samples of soil or water through a microscope reveals a whole world of bacteria and other tiny organisms. Some areas in the world, such as areas of Mexico, South Africa, Brazil, the southwestern United States, and Madagascar, have more biodiversity than others.
How has biodiversity changed history?
The traditional view is that species have increased in diversity continuously over the past 200 million years, particularly in the last 100 million, leading to more diversity now than ever before. But some recent studies suggest biodiversity has tended to stay largely the same, with only occasional surges.
Where can we find biodiversity?
Where is biodiversity? Life, and thus biodiversity, is essentially everywhere on Earth’s surface and in every drop of its bodies of water. This is seldom appreciated because most organisms are small or invisible to the naked eye, and many are rare, short-lived or hidden.
What is biodiversity made of?
Short for biological diversity, biodiversity includes all organisms, species, and populations; the genetic variation among these; and all their complex assemblages of communities and ecosystems. It also refers to the interrelatedness of genes, species, and ecosystems and their interactions with the environment.
How does biodiversity contribute to the sustainability of an ecosystem?
The higher biodiversity in an ecosystem means that there is a greater variety of genes and species in that ecosystem. A great variety of genes and species means that the ecosystem is better able to carry out natural processes in the face of external stress. Thus, the ecosystem is more sustainable.
What is the first reason to preserve biodiversity?
Healthy ecosystems clean our water, purify our air, maintain our soil, regulate the climate, recycle nutrients and provide us with food. They provide raw materials and resources for medicines and other purposes. They are at the foundation of all civilisation and sustain our economies.