B) tissues
C)organ systems
D)organisms
Answer:
B tissues
A tissue is a group of cells, in close proximity, organized to perform one or more specific functions.
Answer:
Discoveries that are made through cell technology sometimes result in new regulations.
Explanation:
a. the hominids.
b. Homo erectus.
c. the paleolithic era
d. the neolithic era.
e. the first Homo sapiens.
Answer:
Alveoli
Explanation:
Answer:
Nitrobacter and nitrosomonas
Explanation:
Both are bacteria and form nitrates and nitrites from ammonia