What counteract pressure that pushes and pulls at the side of a building during an earthquake

A. Base isolators
B. Mass dampers
C. Active tendon systems
D. Cross braces

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

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

What does it mean for an allele to be dominant?