What is the function of the type of muscle that is pictured below? -support and movement of the skeleton
-movement of food through the digestive system
-contraction and relaxation of the heart
-generation and conduction of electrical signals

How do accessory pigments chlorophyll?

Describe five factors that influence the value of fuel

Compare and contrast cladistics and phylogeny. what are their advantages and disadvantages? which is the most useful in understanding how an organism developed into its current form? which concept most strongly supports your opinion about the origin of any given organism?