1) Why do scientists use models? A) Models are unreliable.
B) Models waste natural resources.
C) Models predict not just describe events.
D) Models are based on scientific laws and principals so they are more
reliable than the real thing.

What is used as a template during replication? a- mrna b- trna c- rrna d- dna

The images show two species of tree frogs in a particular region. the gray tree frogs are adapted to the trees of the woodlands, while the green tree frogs can survive in woodlands or grasslands. the gray frog was abundant in the woodlands. because of climatic changes, most of the trees in the region died, and the woodlands changed to grasslands. in such a case, the . the gray tree frog is closely related to the green tree frog genetically, but they have different mating calls. this suggests that speciation occurred because of .

What’s a example of extrusive rock that cooled to quickly for grains to form