Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Question: How many types of major tissues do modern plants have? Answer: three
A tissue is a group of specialized cells of the same kind that perform the same function. Modern plants have three major types of tissues. They're called dermal, ground, and vascular tissues.

Question: What type of vents are giant tube worms found at? Answer: hydrothermal
Giant tube worms are found at hydrothermal vents. They get food from the chemosynthetic bacteria that live within them. The bacteria provide food; the worms provide shelter.

Question: The ether functional group consists of an oxygen atom which forms single bonds with what other atoms? Answer: carbon
The ether functional group consists of an oxygen atom which forms single bonds with two carbon atoms.