Which of the following correctly describes commensalism? The fungi growing amongst legume roots to help the plant assimilate nitrogen.
Mistletoe taking nutrients from oak trees as it grows amongst the banches.
Tiny protists living in the guts of termites to help them digest wood.
A bluebird builds a nest high in the tree to ensure that her young are protected from harm.

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer