Which of the Following is the Most Complex Level of Organization

Question

Which of the following is the most complex level of organization?
A) a heart
B) a water molecule
C) a rainforest
D) the circulatory system

Accepted Answer

The rainforest involves complex interactions between multiple organisms, with different levels of organization such as individual organisms, populations, communities, and ecosystems. It also includes abiotic factors such as climate, geology, and hydrology. In comparison, a heart and the circulatory system are specialized organs and systems within organisms, while a water molecule is a simple chemical compound.