Which example best illustrates the biological concept of a community?
a) all of the blue whales in the world.
b) a herd of bison living in yellowstone park.
c) the temperate grassland ecosystem in the american midwest.
d) a tropical reef aquarium with many different types of fish and corals.

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)

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of

If a checkpoint detects damaged dna, the checkpoint may