What condition must be fulfilled in order for a virus to reproduce

Select the correct answer from each drop down menu. among these figures figure and blank have the same volume. 1 a c e 2 b d

In stage 2 farmers used the land primarily to grow food for their families and their small communities.

What is the result of the greenhouse effect? a. heat is deflected from the atmosphere. b. heat is released from the atmosphere. c. heat is kept in the atmosphere. d. plants are able to grow in the tropics where the air is the heaviest.