How do they grow where grow?

Please provide me with more context! "They" and "where" are too vague.

To answer your question, I need to know:

* Who or what is "they"? Are you talking about plants, animals, people, or something else?

* Where do you want to know about? Is there a specific location or type of environment you're asking about?

For example, you could ask:

* "How do tomatoes grow in a greenhouse?"

* "How do polar bears grow in the Arctic?"

* "How do bacteria grow in a petri dish?"

Once I have more information, I can help you understand how things grow in different environments. 😊