If a moving object loses mass, how can it keep its momentum constant?
A. by speeding up
Answer:
directional selection, is a mode of negative natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype.
Explanation:
The middle ear is an air-filled cavity that sits between the tympanic membrane and the inner ear. The middle ear also consists of three tiny bones called ossicles , the round window, the oval window , and the Eustachian tube .
