a species that is found only on one island would be described as

a. an indicator species

b. the product of artificial selection

c. endemic

d. adaptive

e. a keystone species

Sydney drew a flow chart to illustrate the nitrogen cycle.which labels best complete the flow chart? x: producers undergo photosynthesis.y: nitrogen compounds are released into the air.x: nitrogen compounds are released into the air.y: producers undergo photosynthesis.x: free nitrogen is in the atmosphere.y: producers absorb nitrogen compounds through their roots.x: producers absorb nitrogen compounds through their roots.y: free nitrogen is in the atmosphere.

In the family tree below, people with the recessive trait of attached earlobes are shaded gray.

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic