In invertebrate chordates, the notochord is eventually replaced by bone or cartilage.
a. true
b. false

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)

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.

Crossing over is a method of (blank)?