instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
The climate is defined as the temperature plus precipitation of an area over a long period of time.
answer:
What is defined as the temperature plus precipitation of an area over a long period of time?


question:
A diet rich in calcium and vitamin d may reduce the risk of osteoporosis and related bone fractures.
answer:
A diet rich in calcium and what vitamin may reduce the risk of osteoporosis and related bone fractures?


question:
Modern plants have three types of major tissues.
answer:

How many types of major tissues do modern plants have?