Trees can communicate and share nutrients through an underground fungal network.
Why it is true
This network, called the mycorrhizal network, allows older and larger trees to transfer carbon and water to younger or shaded trees, functioning as a community support system.
Source: Botany
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.
Related facts
Nature
Trees communicate with each other through underground fungal networks.
Nature
Trees communicate and share nutrients through an underground fungal network.
Nature
Trees communicate with each other through an underground fungal network.
Nature
Trees communicate and share nutrients through underground fungal networks.