The leafcutter ant is a species of tropical ant that will cut pieces of leaves from trees and carry them back to their nest. The ants will chew up these leaves into a pulp and use the pulp to grow a type of fungus. Like a farmer, the ants harvest the fungus as a crop to feed the colony while the fungus grows and feeds on the pulp provided by the ants. Which type of interaction best describes the fungus and the ants? commensalism

mutualism

parasitism

predation

Complete the sentences by matching the names of trees to the appropriate blanks. to do this, drag the names on the left into the appropriate blanks in the sentences on the right. match the words in the left column to the appropriate blanks in the sentences on the right. terms may be used more than once. make certain you have filled every blank with a term before clicking submit. 1. deciduous trees lose their leaves seasonally and include trees such as maple and elm. 2. conifer leaves are generally thin and needle-like, while seeds are contained in cones. conifers include cedar and pine. 3. evergreens are plants that maintain their leaves in all seasons and include trees such as cedar, elm, and pine. 4. hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as maple, , and cedar. elm returned you filled in 2 of 10 blanks incorrectly. mango trees are tropical broad leaf plants that maintain their leaves all year long. no credit lost. try again.

Did the vinegar diffuse all the way to the center of any of the cubes? if so, which ones? what does this tell you about surface area-to-volume ratio and the diffusion rate?

Ascientific idea becomes valid when it is what?