What makes studying people difficult is that you are yourself. You will always be different from other humans, so studying them naturally takes you out of your comfort zone
Every plant organ is adapted to its function. For example, leaves that are big and flat absorb plenty of sunlight for photosynthesis. Long roots keep a tree stable and take water from deep in the soil. Some plants have unusual adaptations.
Segmented digestive system, appendages are animal characteristics.
Animals are a major group of organisms, classified as the kingdom Animalia or metozoa. Animals have several characteristics that set them apart from other living things. They are all eukaryotic and usually multicellular, which separates them from bacteria and most protists. Different animals differ in their own characteristics such as appendages, segmentation among other animal characteristics.
The structure that is responsible for releasing energy from food molecules in some singled celled organisms is MITOCHONDRIA.<span> The major function of mitochondria is to carry out cellular respiration, which make energy available for the cells to use. The mitochondria is also called the power house of the cell, because it is the organelle that specializes in turning the food molecules into the energy form that is usable by the cells.</span><span />
