Answer:
19:3
Explanation:
bdb f c dsns v s dv jbj t h h b fndn h f
Question 6 of 21
The rapid spread of devastating diseases among American Indians soon after
the arrival of Europeans was a disastrous result of
A. a lack of medical advances.
B. the African Diaspora,
C. poor nutrition,
D. the Columbian Exchange,
Answer:
D . The Columbian Exchange
Explanation:
Columbian Exchange and disease
Europeans brought deadly viruses and bacteria, such as smallpox, measles, typhus, and cholera, for which Native Americans had no immunity. On their return home, European sailors brought syphilis to Europe.
In which specimen were cells first identified?
microorganism
cork bark
DNA
mitochondrion
Answer: cork
Explanation: Robert Hooke was examining a piece of cork using a microscope in 1665.