Scientists use a hierarchical system to classify organisms.
The broadest categories of classification are known as Kingdoms.
Organisms in the Kingdom Monera, or Eubacteria and Archaebacteria, include those who
A. can move independently, such as animals.
B. reproduce by spores, such as mushrooms.
C.
lack a true nucleus, such as bacteria.
D. have a nucleus and chloroplasts, such as algae.

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.