Describe the various defense mechanisms your body has to fight pathogens, nonspecific and specific. how does not washing your hands properly affect these mechanisms?

Explain why phospholipid molecules form a bilayer. (3 marks)

What is the most appropriate method of gaining weight (muscle mass)

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.