How did dobzhansky and mayr explain the origin of species?

it happens through adaptation by natural selection.
it happens through sympatric speciation.
it happens through allopatric speciation.

Common commercial benefits of microorganisms include synthesis ofa. insulin.b. antibiotics.c. aspirin.d. antibiotics and aspirin.e. antibiotics and insulin.

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen

Why are lipids and proteins free to move laterally in membranes?