Need help, kind of confused. Crossing over and random assortment lead to ?

a. Reduced number of chromosomes
b. Homologous Alleles
c. Genetic Variation
d. Increased number of chromosomes

Any sound above what db can cause hearing loss in human beings

Prior to the mt. st. helens eruption on may 18, 1980, satellite and topographic views of the volcano were captured. based on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m? question 9 options: 600 m 400 m 750 m 500 m

Match the reproductive structures based on their function and the system to which they belong. egg ovary sperm vas deferens vagina fallopian tube testis urethra