Which is a period of the mesozoic era?

a. cretaceous
b. carboniferous
c. devonian
d. eocene

3. lithuania, latvia, and estonia all signed a peace treaty with germany in 1996 signed a pact with russia in 1996 were admitted to the european union in 2004 were damaged by the chernobyl explosion in 1986

In a scientific experiment, a is any factor that can be changed or be changed

Look at the photo i can’t do geography