What is it called when changes occur in an ecosystem that already exist? *

a. primary succession
b. secondary succession
c. pollution

Ascientist is examinin the cell is disrupted when she damages one specific type of macromolecule g the function of macromolecules in a cell she notices that movenent of large molecules into and out of

Fungi are classified into how many groups? a. 1 group b. 2 groups c. 3 groups d. 4 groups

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?