Researchers have found that mixtures of phospholipids placed in water or salt solutions tend to spontaneously
a. rna molecules
b. dna molecules
c. atp
d. methane
e. small spherical units that resemble living cells.

Researchers have found that mixtures of phospholipids placed in water or salt solutions tend to spontaneously form small spherical units that resemble living cells.

Explanation:

d. making up measurements to record.

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs