1. the first forms of life on earth were
a. plants
b. microorganisms
c. birds...
![subject](/tpl/images/cats/biologiya.png)
Biology, 27.08.2019 01:10 unicornpoop54
1. the first forms of life on earth were
a. plants
b. microorganisms
c. birds
d. dinosaurs
2. a suggested and testable explanation for an event is called a
a. hypothesis
b. variable
c. theory
d. control
3. which of the following sciences is not considered a natural science?
a. biology
b. astronomy
c. physics
d. computer science
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Answers: 2
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