How do body parts at different levels of organization vary in complexity? number 3 you

Answer

           As we know that human body is composed of different organ system and each organ is performing its own function different from other one. during cellular organization same cells having same structure and function combine together to form tissues. then tissues performing same function combine together to give rise to organs, different organs whose function is related up to some extent combine and give rise to organ system. Actually there is a division of labor among body cells, because many metabolic reactions are going on in our body which need such division, otherwise normal function of the body will not be performed better.

Example

          Human digestive system is composed of different organs such as mouth, esophagus, stomach, small intestine, large intestine etc. As these are different organs having different composition of cells but their job is one, that is to digest food materials.

           This is the reason that different body parts in different level of organization vary in complexity.

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation:

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?