Alichen is composed of two organisms—a fungus and an alga—that depend upon each other for survival. which term best describes their relationship?

a. parasitism
b. mutualism
c. symbiosis
d. commensalism

*will mark brainliest* certain species of are now recognized as indicators of environmental pollution. a. lichen b. mushroom c. yeast d. none of the above

Acommon kind of mechanical weathering is called

What evidence did mendel find that supported his law of independent assortment? a. some traits are controlled by several different genes. b. a trait can be passed on from a parent to an offspring. c. most traits have a dominant form and a recessive form. d. different traits are passed on independently of each other.