Hey there,
Answer:
Van Helmont - He concluded that trees gain most of their mass by absorbing water
Priestley- He found out that plants release oxygen
Ingenhousz- He concluded that plants needs sunlight to produce oxygen.
Hope this helps :D
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Let’s find out together buddy we can get thru this hard stuff
The arctic circle is north of the tropic of cancer, if you look on a map you can see the tropic of Cancer is about halfway between the arctic circle and the equator