Ignaz Semmelweis demonstrated the importance of (antisepsis/vaccination/washing) as a means of preventing disease transmission
What will be an ideal response?
washing
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Which is the correct sequence of steps in the scientific method?
A. form hypothesis - observation - collect data - analyze results - design an experiment B. form hypothesis - observation - design an experiment - collect data - analyze results C. observation - analyze results - draw conclusion - design an experiment - form hypothesis D. observation - form hypothesis - design an experiment - collect data - analyze results E. observation - analyze results - form hypothesis - draw conclusions - design an experiment
During cleavage, the stage at which the pre-embryo becomes a solid ball with more than 12 cells. _____
A) Human chorionic gonadotropin
B) Zygote
C) Chorion
D) Morula
E) Folic acid
F) Fertilization
G) Blastocyst
H) Parturition
I) Cleavage
J) Ovulation
K) Placenta
L) Implantation
Which aspect of their lives prevents
amphibians from becoming fully terrestrial?
a. finding a mate b. reproduction c. respiration d. obtaining food e. more than one of these
The study of the distribution of animals and plants around the world is
a. diversity.
b. biogeography.
c. ecology.
d. natural history.
e. environmentalism.