i have to finished this cross word , and i need help on the last two . So thank you if you can solve it :)

A substance that micro organisms can be grown on . its a 4 letter word.

A group Of Micro Organisms , its a 6 letter word.

Of course! I'd be happy to help you solve your crossword puzzle. Let's tackle the first clue: a substance that microorganisms can be grown on, which is a 4-letter word.

To find the answer, we can start by thinking about commonly used substances in microbiology for growing microorganisms. One widely used substance is agar, which is a gelatinous substance derived from seaweed and is used to culture microorganisms in laboratories. Agar provides a solid surface for microorganisms to grow and form colonies.

Therefore, the 4-letter word you are looking for is "agar."

Now, let's move on to the second clue: a group of microorganisms, which is a 6-letter word.

A group of microorganisms can often be referred to as a "colony" or a "culture." However, since you need a 6-letter word, we need to consider other possibilities.

Another term commonly used to refer to a group of microorganisms is "biota." The term "biota" refers to the collection or population of living organisms in a particular habitat or environment. It can encompass microorganisms as well as larger organisms.

Therefore, the 6-letter word you are looking for is "biota."

I hope that helps you complete your crossword! If you have any more questions or need further assistance, feel free to ask.