Please help!! Prompt
A) The three levels of biodiversity are genetic diversity, species diversity, and ecosystem diversity. Explain the three levels
of biodiversity and the concerns associated with loss of diversity at each level
B) Species and genetic diversity can be very beneficial to humans. Describe three ecosystem services that nature provides
to humans

What is called the "building block" of life?

The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.

Lucia is walking barefoot in her yard. she accidentally steps on a nail. how will her nervous system work to generate a reaction? arrange the eventschronologically.