How to access Photo Stream on iPhone and iPad. 1  Launch the Photos app on your iPhone or iPad. 2  Tap on the Albums tab in the bottom navigation. 3  Tap on My Photo Stream.ow to access Photo Stream on iPhone and iPad. 1  Launch the Photos app on your iPhone or iPad. 2  Tap on the Albums tab in the bottom navigation. 3  Tap on My Photo Stream.
Ecologists study these relationships among organisms and habitats of many different sizes, ranging from the study of microscopic bacteria growing in a fish tank, to the complex interactions between the thousands of plant, animal, and other communities found in a desert. Ecologists also study many kinds of environments.
It is thus possible to study biology at many levels, from collections of organisms (communities), to the inner workings of a cell (organelle). Ecology is the study how organisms interact with each other and their physical environment. These interactions are often quite complex.