Root cellars, complete with ladders or steps and the ability to walk about in the space, were first used: O In Australia
O in Britain
O In the United States
O In South America

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.

Black fur(b) in guinea pigs is dominant over white fur(b). find the probability of a homozygous offspring in a cross: bb x bb. a. 0% b. 25% c. 50% d. 75% e. 100%

Where is having brightly colored feathers that attract mates most clearly an adaptation for a bird? a. a forest with dense vegetation b. a sandy beach beside an ocean c. a snowy tundra with little vegetation d. a swamp with many hawks that eat birds