What is organ?
a. group of different types of tissue that work together to perform a specific function or related functions.
b. group of cells that work together to perform a similar function.
c. two or more organs that work in a coordinated way to carry out similar functions.
d. processes by which unspecified cells develop into their mature form and function.

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

State officials are considering constructing a road through a forested wilderness area. this action will likely affect the forest ecosystem in various ways. part a: predict how the construction of a road could negatively affect plants and animals in that ecosystem. (3 points) part b: describe one way that the construction of a road could have a positive impact of the forest ecosystem. (1 point)

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.