Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..
A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..
The endoplasmic reticulum and Golgi apparatus are the organelles involved in the translation step of protein synthesis a..
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..
Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..
