question below:
Lichens are symbiotic organisms made of green algae and fungi. What do the green algae supply to the fungi in this symbiotic relationship?
answer below:
food

question below:
When carbon and oxygen combine chemically, the mass of the product is
answer below:
equal to the mass of the carbon plus the mass of the oxygen

question below:
Which organisms benefit in the relationship between bees and flowering plants?
answer below:
both the bees and the flowering plants

question below:
A reflex can protect the body from harm. Which organ systems work together to produce a reflex?
answer below:
nervous and muscular systems