B.
Humans are also part of ecosystems and if they cease to exist, human well being will be affected.
Answer:
Biology is the scientific study of life. It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. For instance, all organisms are made up of cells that process hereditary information encoded in genes, which can be transmitted to future generations. Another major theme is evolution, which explains the unity and diversity of life.
Explanation:
Hope this helps
Which of what? could you be more clear?
