Disease-causing microorganisms are known as
a viruses.
b bacteria.
c pathogens.
d parasites.

Milk production during breastfeeding is increased by the suckling of a newborn from his mother's nipple. this type of feedback mechanism best describes a positive or negative

Were you able to observe the nucleolus in any of the cells if so which ones

How far down have geologists drilled holes ? (science) a: 3.8 km b: 12 km c: 100 m d: 1200 km